File : media/system/js/fields/joomla-media-select.js

Line : 184
await getImageSize(Joomla.selectedMediaFile.url);

Line : 207
await getImageSize(Joomla.selectedMediaFile.url);

Wont work reliably. Joomla.selectedMediaFile.url is relative. On say a sub-category page - it wont work
needs to be Joomla.selectedMediaFile.thumb ??
or Joomla.getOptions('system.paths').rootFull+Joomla.selectedMediaFile.url

TEST

I think this may only be an error condition so Force it to happen.

File : media/system/js/fields/joomla-media-select.js
Line : 181
Add : Joomla.selectedMediaFile.width=0;
before the condition : if (Joomla.selectedMediaFile.width === 0 || Joomla.selectedMediaFile.height === 0) {

Edit an article in a sub-category
Use Media Manager to insert an image into the content
Use browser F12 development tools to watch the failure condition? fail