Crash while adding new entry in Multitext

Had created a multitext, three entries. Keyframed the size on the entries. Moved the non-keyframed layout position of the text entries around, and then clicked to add a 4th text entry. Resolve froze. Diagnostic log zipfile attached (which incidentally also show the earlier "Missing frame for MediaOut1" issues reported separately).

DR Studio 20 b2

freeze on multitext.png (80.24 KiB) Viewed 139 times

If helpful... I notice after restarting that when I set the time position at a size keyframe (the ending one), the size value in the Inspector field (and slider bar) will suddenly ramp across the range of values that have been keyframed, even though the timeline position is not being moved, finishing on the expected value again. DR seems to be working on cache or refreshing the screen, but I don't know why that should cause the displayed size parameter to "change" temporarily in the Inspector.