Custom asset files don't unload when restarting

[sooooosh]

Describe the bug

When adding custom units, you used to be able to make small changes in, for example the .object file, reload the editor by clicking "restart game" and the changes would take effect right away. This doesn't seem to work anymore and you have to relaunch the whole game for the changed files to load.
When restarting the level or going back to the main menu and load back into the editor, the old file is still loaded even when you swap it out entirely.

Steps to reproduce the issue

units.zip
<add unload_on_restart="true"> <unit path="units/pd2_mod_hot/test"/> <object path="units/pd2_mod_hot/test" /> <model path="units/pd2_mod_hot/test"/> <texture path="units/pd2_mod_hot/gov_c_int_marble_c_white_df"/> <material_config path="units/pd2_mod_hot/test"/> </add>

• Add attached custom unit to a level.
• Load into level and spawn the unit.
• Alt-tab out of the game and change something in the files (e.g. rename the material in the test.material_config).
• Switch back to the game and restart the editor by clicking on "restart game" or go to main menu and back in the level.
• The unit doesn't change.
• Relaunch the game and load back into the level.
• Custom unit should have a missing material now.

[Luffyyy]

Generally best way to report these issues is to provide a project, so I can go straight to the issue. does adding reload="true" work?

[sooooosh]

Another Fucking Test Project.zip
here's test project with the custom asset set up

reload="true" did not work, neither did unload="true", but the wiki says that is true by default anyway.