Update: I have found a good zero inconvenient solution workaround to this problem which I post at the end of the this post.
Hi guys
I too have the exact same problem and it happens consistently (not intermittently) with Unreal 5.3. (GTX2080, Ryzen 5600G, 1440p resolution, WIndows 11)
Having read through this thread, I believe the problem is that the “create blueprint from actor selection” window pop=up is off-screen by one full screen width to the right. That is why there are no crash log reports, Unreal has not crashed, the popup window is active but out of sight on a single display setup. When a second display is connected as extended, the pop up will still be out of sight unless the Unreal editor is moved to the extended display (which is always left of the primary). So, when the blueprint window pops up, it shows up on the primary display (i.e., a full screen width to the right of the editor).
So, hi @SupportiveEntity if I may suggest, I think the fix for your next Unreal update (5.4?) would be to have the pop-up window reset to the centre of the Unreal editor as all the other popup windows do.
I am currently learning Unreal on a Udemy course and some others there have the same issue.
Of course, the mystery remains on what is the common element in our WIndows environment that is causing this full screen width offset that only a few of us are experiencing.
Thanks
Update: OK while this problem is hopefully fixed in the next Unreal update, I looked around in the Editor Preferences to see if there is any option to stop the popup and sure enough there is:
Go to Edit->Editor Preferences
then in the General Appearance section, set the field “Asset Editor Open Location” to “Main Window”. This will have the blueprint open in the main editor window as another Tab. So, no need to change your windows resolution or add another monitor etc!
But still, I do hope this will be fixed in the next update.