Populating MultiMeshInstance causes an editor crash #4
Description
Godot version
3.5 RC2
System information
Windows 11, GLES3
Issue description
The "Populate MultiMesh" context dialogue causes a crash.
This issue was definitely not present in 3.5 beta 4, haven't checked other versions between Beta4 and RC2.
Steps to reproduce
In the project attached below, select the MultiMeshInstance node, open the "Populate Surface" dialogue and select the target surface and source mesh accordingly. Now, clicking "Populate" will cause a crash.
Minimal reproduction project
No response