This thread has convinced me to remove my installation of 4.21.* and install 4.19.2. Since I’ve not yet started on the part that uses Unreal itself this was very much on time.
Also, maybe it’s a good idea to give more visibility to this issue. The course only suggests to not use versions above 4.19.2, but doesn’t tell the viewer why.
I started a thread on the Ask forum to find out why we were discouraged to use 4.20+, and @DanM gladly responded with a bunch of reasons to not use those versions.
I think the bug in question in this thread is logged at Epic under code UE-63298. The issue has been backlogged, which means that Epic thinks other stuff is more important. You can however give this issue more visibility by going to the issue page, logging into your Epic account and vote on the issue. Please see my thread for more tickets that should discourage us from using 4.20+ at this point in time.
The only thing that scares me is that most of these bugs mentioned by @DanM are all confirmed to be affecting version 4.20, 4.21 and some even 4.22 without a date or indication for when they are supposed to picked up or fixed.