After having a nice talk to Niebo26 On the MX discord Group he tried to help me with this perticular bug.
We at first thought it was caused by The MeshModeller in the map editor. But after further investigation, it seems to be in the Map editor all around.
I noticed the bug for the first time after editing a certain set of blocks in the Mesh Modeller (MM). after saving a map with certain blocks used from the MM and closing down the map, to work on it again a day later. The game started to load the map, froze somewhere on a certain point but kept playing the music on the background.
when trying to do anything (clicking, ALT+TAB, ESC) a random frame from before popped up. the only way to Close ManiaPlanet was byt ending the procces in the task manager.
Now Niebo26 tried to help me fix this problem or at least locate it as we first assumed it was caused by the MM.
But a few days back I was using the "Vanilla" map editor with a perfect working map, made an intro saved the map. opened it a few hours later and the same freeze happened it froze at exact the same loading point as before.
Now Niebo26 told me he thinks its something in the "Vanilla" map editor that corrupts files in other editors (such as the MM, MediaTracker [MT]).
loligFreeze when loading a map after particuliar modifications maybe ?
As in it seemed to have happened when you use an "editor in the map editor"
Like you said after items
After Mediatracker
Yeah so maybe it's "editors in map editor" messing up
Yeah but like "vanilla things"