SoftBody It has error get_global_transform

[2821869675]

Godot version:

3.2.3.stable.official

OS/device including version:

GLES2 windows7

Issue description:

I need to temporarily remove the software object from the scene tree.
After I removed it from the stack I created, an error was reported on the console for each frame.
content is as follows:

ERROR: get_global_transform: Condition "!is_inside_tree()" is true. Returned: Transform() At: scene/3d/spatial.cpp:268

[pouleyKetchoupp]

Could you please provide a minimal reproduction project? It would help contributors reproduce and fix the issue.

[2821869675]

demo.zip

[pouleyKetchoupp]

The error occurs for each frame when the soft body's spatial_attachment is not in the scene tree:

 godot.windows.tools.64.exe!Spatial::get_global_transform() Line 268	C++
 godot.windows.tools.64.exe!SoftBody::_update_physics_server() Line 419	C++
 godot.windows.tools.64.exe!SoftBody::_draw_soft_mesh() Line 440	C++