I will try to reproduce, but I wonder if it could be due to release notes change of:
Blur and Titler plugins were modified so that these plugins can be used in combination with others (e.g. Blue Banana) without introducing the clipping into the process.
If so I will have to back out this mod.
or may be make this configurable via checkbox or fix another part we failed to consider while doing this change ...
Sorry I am a distanced myself from my computer-related "hobbies" and moved to being angry at random reddit posts .....
I'll try to replicate and have another look at changes in titler.