I just noticed an issue trying to clean up some obsolete profiles. I had a bunch of profiles:
AnycubicDeltaLinearPLus
AnycubicDeltaLinearPLus - Test 1
AnycubicDeltaLinearPLus - Test 2
AnycubicDeltaLinearPLus - Test 3
AnycubicDeltaLinearPLus - Test 4
AnycubicDeltaLinearPLus - Test 5
As I was removing the test versions I noticed that the AnycubicDeltaLinearPLus profile had also been deleted. I've been playing with this and it seems to be dependent on whether there is white space in the name.
I just tried this on 4.1.1 and the problem is still there.