Update from 9.5.22 to 9.5.23: I will be logged out automatically in the backend when I log in
After the update from TYPO3 9.5.22 to 9.5.23, I will be logged out automatically in the backend when I log in.
I tried these things:
- clearing the cache in install tool
- removed "typo3temp" folder
- cleared all cookies
- tried different browsers
- clear opcode cache with
- set [BE][lockIP] = 0
If I go back to 9.5.22, then it works again.
Updated by Uwe Jakobs 11 months ago
I can confirm Lukas' workaround - changing PHP-Version down- and up again worked with me. It seems to be related with how your OPcache is managed - Oliver explained why.
I my case, only Systems on Managed Servers with the hoster "Hetzner" were affected, when the option "OPcache" was checked in the PHP-Settings.
On root-Servers with the same hoster, I had no problems at all, neither on all other Systems (local DEVs as Stand-Alones or VMs) with different OS and PHP-Versions.
Obviously, there seems to be a bug in the update-procedure (and not in the 9.5.23-Core) in combination with OPcache-Flushing, since this worked like a charm with older updates.
My assumption concerning Multidomain-Setups proved to be wrong, weanwhile.