Structure editor sometimes bugs out and removes all items from the view, together with comments that serve as help text. The window is completely empty.
Also this Python detection tool that needs to be executed prior the first run didn't support python 3.10 at some point -- they've did version detection based on the filename that detected 3.10 as 3.1 (windows9-style version detection). Not sure what's the case with recent IDA versions, because I'm using Ghidra since a long time now.
But overall I agree, I would never suggest IDA when being asked about an example of a buggy software.