Users are starting to see blank thumbnails

[turt2live]

I know Bruno was/is having this problem, and it appears that others are having it too. Reported on Arch/FF

[lampholder]

Bruno was also having this problem on linux/ff.

I haven't been able to reproduce (uploading a bunch of different images to a range of encrypted/unencrypted rooms)

[Ryonez]

Trowing this in as a possible related issue:
matrix-org/synapse#2182

[turt2live]

This does not have enough information to be a useful ticket in 2021/22 - if people are still seeing this, please open a new issue with more details.

[karolyi]

I think this might be related to #9605