The handles that appear when using the move tool appear to be mixed up in terms of their axis.
It only happens to parts that have been rotated on the X/Z axis. Take any part and press “T” to tilt it, then the X axis’ handles should be as big as the part’s Z size, instead of X handle size = Part.Size.X and vice versa.
Experiencing bug (just started) on:
Windows 7 64 bit
ROBLOX Version 0.187.0.56990 System Menu
AMD A8-6600K Radeon 3.9 GHz quad core
Some AMD GPU as well