Operating system: platform: Linux, Debian 9 AMD 64
Graphics card: VGA compatible controller: NVIDIA Corporation GK106 [GeForce GTX 650 Ti] (rev a1)
version: 2.83.5, branch: master, commit date: 2020-08-19 06:07, hash: c2b144df395f, type: Release
build date: 2020-08-19, 06:05:02
Short description of error
Join dose not work correctly in some case,
Exact steps for others to reproduce the error
There is a empty "plain box" around the Objects to Join, and shows up the join bug.
( Using shift select ) Select the Cube first then s001-#def-active-grp_curve_.007 and, (in object mode of course) Press Control J, and the Cube Disappears!
Change order of selection and Cube dose not disappear IE:
Select the s001-#def-active-grp_curve_.007 then the Cube and, (in object mode of course) Press Control J, and it works!
Attach files, and system info file from blender