Date from the user's report: October 26th

After editing some captions from the images in the gallery block, images are not visible anymore

Steps to reproduce

1. Add a gallery block.

2. Edit the image captions from the Gallery block on the editor.

3. Images are replaced by a white/gray square. Screenshot: https://prnt.sc/v79cse

4. If images are replaced, a link is displayed. Screenshot: https://prnt.sc/v78lf1

5. I created a new test post on the user's site, and the result was the same. Images disappear after adding/editing the image caption on the editor.

6. Images and captions are displayed correctly when editing captions on the media library. Screenshot: https://prnt.sc/v79mn9

7. Suggested the user editing the image caption in the media library before placing them in a gallery block, and replace the gallery blocks for new ones. It worked, but there are other posts with the same issue too:

http://bitchinchickens.com/2020/10/01/case-study-burn-survivors/ Screenshot: https://prnt.sc/v7ytvp

Context / Source

25176210-hc
3438940-zd

Screenshot:

https://prnt.sc/v78lf1
https://prnt.sc/v79cse
https://prnt.sc/v7ytvp