Собственно проблема на скриншоте (немного поехал).
В двух словах: имеются вариативные товары (размеры одежды), и с недавних пор при изменении цен через админку зависает WC, однако, цену все же меняет.
Нужно поправить, т.к. товаров добавляется много, и данный нюанс действует на нервы.

Цена обсуждаема. Быстро отвечаю в Telegram. Оплата ЯД/Сбер.

Вероятно проблема в meta-boxes-product-variation.min.js:1:8483. Обновлять WC не вариант.

В консоли запрос с 500 ошибкой:

XHRPOSThttps://salarium.by/wp-admin/admin-ajax.php?_fs_bl...
[HTTP/2 500 Internal Server Error 1017ms]

send
https://salarium.by/wp-admin/load-scripts.php:4:26...
ajax
https://salarium.by/wp-admin/load-scripts.php:4:22...
save_changes
https://salarium.by/wp-content/plugins/woocommerce...
save_variations
https://salarium.by/wp-content/plugins/woocommerce...
dispatch
https://salarium.by/wp-admin/load-scripts.php:3:12...
add/r.handle
https://salarium.by/wp-admin/load-scripts.php:3:91...

Строка запроса
_fs_blog_admin true
Данные форм
attribute_pa_size[0] s
variable_post_id[0] 3254
variation_menu_order[0] 0
upload_image_id[0] 0
variable_sku[0]
variable_enabled[0] on
variable_regular_price[0] 140
variable_sale_price[0] 94
variable_sale_price_dates_from[0]
variable_sale_price_dates_to[0]
variable_stock[0] 0
variable_backorders[0] no
variable_stock_status[0]
variable_weight[0]
variable_length[0]
variable_width[0]
variable_height[0]
variable_shipping_class[0] -1
variable_description[0]
variable_download_limit[0]
variable_download_expiry[0]
default_attribute_pa_size
action woocommerce_save_variations
security b683e081b5
product_id 3253
product-type variable





О проекте и начинке:
`
### WordPress Environment ###

Home URL: https://salarium.by
Site URL: https://salarium.by
WC Version: 2.6.10
Log Directory Writable: ✔
WP Version: 4.9.8
WP Multisite: –
WP Memory Limit: 512 MB
WP Debug Mode: –
WP Cron: ✔
Language: ru_RU

### Server Environment ###

Server Info: Apache/2.4.34
PHP Version: 7.3.14
PHP Post Max Size: 128 MB
PHP Time Limit: 120
PHP Max Input Vars: 10000
cURL Version: 7.62.0
OpenSSL/1.0.2k

SUHOSIN Installed: –
MySQL Version: 5.6.47
Max Upload Size: 128 MB
Default Timezone is UTC: ✔
fsockopen/cURL: ✔
SoapClient: ✔
DOMDocument: ✔
GZip: ✔
Multibyte String: ✔
Удалить запись: ✔
Удалённое получение: ✔

### Database ###

WC Database Version: 2.3.6
:
woocommerce_sessions: ✔
woocommerce_api_keys: ✔
woocommerce_attribute_taxonomies: ✔
woocommerce_downloadable_product_permissions: ✔
woocommerce_order_items: ✔
woocommerce_order_itemmeta: ✔
woocommerce_tax_rates: ✔
woocommerce_tax_rate_locations: ✔
woocommerce_shipping_zones: ✔
woocommerce_shipping_zone_locations: ✔
woocommerce_shipping_zone_methods: ✔
woocommerce_payment_tokens: ✔
woocommerce_payment_tokenmeta: ✔

### Active Plugins (51) ###

LayerSlider WP: от Kreatura Media – 6.6.5
ACF Content Analysis for Yoast SEO: от Thomas Kräftner
ViktorFroberg
marol87
pekz0r
angrycreative
Team Yoast – 2.2.0

Advanced Custom Fields: Flexible Content Field: от Elliot Condon – 1.1.1
Advanced Custom Fields: Repeater Field: от Elliot Condon – 1.1.1
Advanced Custom Fields - Location Field add-on: от Julien Bechade – 1.0
Advanced Custom Fields: от Эллиот Кондон – 5.8.0
Akismet Anti-Spam: от Automattic – 4.0.8
Brozzme Product Navigation: от Benoti – 1.4.1
Disable New User Notifications: от Thomas Griffin – 1.0.2
Duplicate Menu: от Jonathan Christopher – 0.2.2
Duplicate Post: от Enrico Battocchi – 3.2.3
Google Tag Manager for Wordpress: от Thomas Geiger – 1.9.2
Easy Testimonials: от Gold Plugins – 3.3.2
Easy WP SMTP: от wpecommerce
alexanderfoxc – 1.3.9.1

Envato WordPress Toolkit: от Envato – 1.7.2
WPBakery Page Builder: от Michael M - WPBakery.com – 5.4.5
Login No Captcha reCAPTCHA (Google): от Robert Peake – 1.6.4
Market Exporter: от Антон Ванюков – 1.0.5
Memphis Custom Login: от Ian Howatson – 3.2.9
NinjaFirewall (WP Edition): от The Ninja Technologies Network – 3.9.1
NinjaScanner: от The Ninja Technologies Network – 2.0
Image optimization service by Optimole: от Optimole – 2.2.6
Portfolio Post Type: от Devin Price – 1.0.0
WooCommerce Product Filter: от Mihajlovic Nenad – 6.3.0
Redis Object Cache: от Till Krüss – 1.5.6
Regenerate Thumbnails: от Alex Mills (Viper007Bond) – 3.1.0
Slider Revolution: от ThemePunch – 5.4.6.4
Rewrite Rules Inspector: от Daniel Bachhuber
Automattic – 1.2.1

Saphali Woocommerce Russian: от Saphali – 1.8.5
Self-Hosted Google Fonts: от asadkn – 1.0.1
createIT Size Guide Plugin: от createIT – 2.6
SVG Support: от Benbodhi – 2.3.15
Swap Google Fonts Display: от Gijo Varghese – 1.0.6
UberMenu 3 - The Ultimate WordPress Mega Menu - kingtheme.net: от Chris Mavricos
SevenSpark – 3.2.0.2

UpdraftPlus - Backup/Restore: от UpdraftPlus.Com
DavidAnderson – 1.16.0

User Activity Log: от Solwin Infotech – 1.4.1
Velvet Blues Update URLs: от VelvetBlues.com – 3.2.8
Version Control for jQuery: от Iversen - Carpe Noctem – 1.0.8
Woocommerce Custom Sale Tag: от Jamie Chong – 1.0
Google Dynamic Remarketing: от Sinaps Marketing – 2.2
WooCommerce Email Test: от RaiserWeb – 1.2
WooCommerce Google Ads Dynamic Remarketing: от Wolf+Bär Agency – 1.7.14
WooCommerce Product Search: от itthinx – 1.10.2
Simple Registration for WooCommerce: от Astoundify – 1.5.2
WooCommerce: от WooThemes – 2.6.10
Wordfence Security: от Wordfence – 7.3.2
WordPress Importer: от wordpressdotorg – 0.6.3
Yoast SEO Premium: от Команда Yoast – 4.7
WP Rocket: от WP Media – 3.4.2.2
WP SEO Structured Data Schema: от WPSEMPlugins – 2.6.11
WPS Hide Login: от WPServeur
NicolasKulka
tabrisrp – 1.5.2.1


### Settings ###

Force SSL: ✔
Currency: BYN (руб.)
Currency Position: right_space
Thousand Separator: .
Decimal Separator: ,
Number of Decimals: 0

### API ###

API Enabled: ✔

### WC Pages ###

Ссылка магазина: #5 - /shop/
Корзина: #6 - /cart/
Оформление заказа: #7 - /checkout/
Мой аккаунт: #6062 - /my-account/

### Taxonomies ###

Product Types: external (external)
grouped (grouped)
simple (simple)
variable (variable)


### Theme ###

Name: Kalium
Version: 2.0.4
Author URL: http://laborator.co/
Child Theme: ❌ – Если вы модифицируете элементы WooCommerce в теме WordPress
которую вы не разрабатывали самостоятельно
рекомендуется использовать дочернюю тему. Читайте: Как создать дочернюю тему

WooCommerce Support: ✔

### Templates ###

Overrides: kalium2/woocommerce/archive-product.php
kalium2/woocommerce/cart/cart-empty.php
kalium2/woocommerce/cart/cart-item-data.php
kalium2/woocommerce/cart/cart-shipping.php
kalium2/woocommerce/cart/cart-totals.php
kalium2/woocommerce/cart/cart.php
kalium2/woocommerce/cart/cross-sells.php
kalium2/woocommerce/cart/mini-cart.php
kalium2/woocommerce/cart/shipping-calculator.php
kalium2/woocommerce/checkout/cart-errors.php
kalium2/woocommerce/checkout/form-billing.php
kalium2/woocommerce/checkout/form-checkout.php
kalium2/woocommerce/checkout/form-coupon.php
kalium2/woocommerce/checkout/form-login.php
kalium2/woocommerce/checkout/form-pay.php
kalium2/woocommerce/checkout/form-shipping.php
kalium2/woocommerce/checkout/payment-method.php
kalium2/woocommerce/checkout/payment.php
kalium2/woocommerce/checkout/review-order.php
kalium2/woocommerce/checkout/terms.php
kalium2/woocommerce/checkout/thankyou.php
kalium2/woocommerce/content-product.php
kalium2/woocommerce/content-product_cat.php
kalium2/woocommerce/content-single-product.php
kalium2/woocommerce/content-widget-product.php
kalium2/woocommerce/global/form-login.php
kalium2/woocommerce/global/wrapper-end.php
kalium2/woocommerce/global/wrapper-start.php
kalium2/woocommerce/loop/add-to-cart.php
kalium2/woocommerce/loop/loop-end.php
kalium2/woocommerce/loop/loop-start.php
kalium2/woocommerce/loop/orderby.php
kalium2/woocommerce/loop/pagination.php
kalium2/woocommerce/loop/sale-flash.php
kalium2/woocommerce/myaccount/form-edit-account.php
kalium2/woocommerce/myaccount/form-edit-address.php
kalium2/woocommerce/myaccount/form-login.php
kalium2/woocommerce/myaccount/form-lost-password.php
kalium2/woocommerce/myaccount/form-reset-password.php
kalium2/woocommerce/myaccount/my-account.php
kalium2/woocommerce/myaccount/my-address.php
kalium2/woocommerce/myaccount/my-downloads.php
kalium2/woocommerce/myaccount/my-orders.php
kalium2/woocommerce/myaccount/view-order.php
kalium2/woocommerce/order/form-tracking.php
kalium2/woocommerce/order/order-again.php
kalium2/woocommerce/order/order-details-customer.php
kalium2/woocommerce/order/order-details-item.php
kalium2/woocommerce/order/order-details.php
kalium2/woocommerce/product-searchform.php
kalium2/woocommerce/single-product/add-to-cart/grouped.php
kalium2/woocommerce/single-product/add-to-cart/variable.php
kalium2/woocommerce/single-product/meta.php
kalium2/woocommerce/single-product/product-image.php
kalium2/woocommerce/single-product/product-thumbnails.php
kalium2/woocommerce/single-product/rating.php
kalium2/woocommerce/single-product/related.php
kalium2/woocommerce/single-product/review-meta.php
kalium2/woocommerce/single-product/review-rating.php
kalium2/woocommerce/single-product/sale-flash.php
kalium2/woocommerce/single-product/up-sells.php
kalium2/woocommerce/single-product-reviews.php
kalium2/woocommerce/single-product.php
kalium2/woocommerce/taxonomy-product_cat.php
kalium2/woocommerce/taxonomy-product_tag.php

`