previously it wasn't deleting object placement when you removed the objects (and related elements like IfcDirections etc) and working on project long enough you might had a bunch of orphaned data in it
Now when you change the segment's length connected obstructions will adjust. Same for changing obstruction's length. You can also move obstructions/segment around and then use "Regenerate" to make them fit.
Small demo - https://imgur.com/a/atm8Mdx
Currently it's not yet available from UI, only from F3 menu.
On changing segment's length obstruction is not yet adjusted.
Short demonstration - https://imgur.com/a/I5fybpO
* Add texture support for IfcIndexedTextureMap
* fix description.
* Fix posible duplicate coordinate index issue
* Clean up code.
* revert default clean_mesh.
* Fix errors.
* change to EXTEND mode when not RepeatS/T
* remove tris merge to support mix quads and tris.