Thanks for this advice. Unfortunately with Evernote V10.80.2 on Windows 11 , clicking on the hamburger icon does not result in something.
I checked the log file in C:\Users\<user>\AppData\Roaming\Evernote\logs\ like gazumped proposed it.
Obviously the following line in the log entry is what was caused by clicking on the "hamburger-icon":
{"name":"electron.main","hostname":"xxxxxx","pid":17044,"topicName":"boron:MenuBuilder","level":50,"msg":"boron:MenuBuilder Error during building menu for window type 0 with id 2: TypeError: Error processing argument at index 2, conversion failure from ","time":"2024-03-13T21:56:42.650Z","v":0}