TYPO3 Core

I can confirm this problem in some of our customer's installations.

• Switch back to 8.7.20
• Clear all TYPO3 caches and browser cache, reload backend
• Switch back to 8.7.21
• Again clear all caches and browser caches, reload

That worked for us in all affected installations.

@Wolfgang Podbregar Wagner Thank you for your findings. Just a question: when you write "Temporary workaround", do you mean that the problem comes out again sooner or later?

I tried to reproduce the problem after an update from 8.7.20 to 8.7.21

- updated TYPO3
- cleared cache
- cleared browser cache

but I was not able to see it (so far, after a brief test).

It seems, this was a problem in our installations, and no TYPO3 problem. So, from my side, this ticket could be closed.

@Christop Werner: it seems, there was a change in the PNG file for the icons. If you use TYPO3 with symlinks, try to replace the TYPO3 core.

@Wolfgang Podbregar Wagner: ok, good to know, the tested websites are both at jweiland, so I think that is the same problem you have discovered.

-> can be closed.

Wolfgang Wagner wrote:

It seems, this was a problem in our installations, and no TYPO3 problem. So, from my side, this ticket could be closed.

@Christop Werner: it seems, there was a change in the PNG file for the icons. If you use TYPO3 with symlinks, try to replace the TYPO3 core.