ID:2564765
 
Resolved
When screen objects had one animation interrupt another, the temporary "transition" appearance for the new animation's starting point was calculated incorrectly.
BYOND Version:513.1520
Operating System:Windows 10 Pro 64-bit
Web Browser:Chrome 81.0.4044.113
Applies to:Dream Seeker
Status: Resolved (513.1521)

This issue has been resolved.
test case sent in private
Bump on this.
Lummox JR resolved issue with message:
When screen objects had one animation interrupt another, the temporary "transition" appearance for the new animation's starting point was calculated incorrectly.