Find in files does not find anything after update to 2021.1

Hello,

After upgrading the clion version to version 2021.1 the 'Find in Files' seems to be broken. Please check how I'm able to find 'Symbols' but not able to 'Find in Files' - the 'symbols' should be a subset of the 'find in files' (I've already checked all the flags that might have impact on the finding e.g. file mask, regex, In Project, etc)

Could you please guide me how to troubleshoot further why this feature is misbehaving?

File in files screenshot:


Symbol:


Here below an even more compelling evidence about the problem:
 

I'm running on linux and below you can find the build version:

Thank you,
Rodrigo