Ship despawns when I get into it
Latest version of space engineers, vanilla survival server (no mods) hosted by GTX Gaming.
Starting today, the very first small grid ship I get into after [re-]joining the server almost immediately despawns with me still in it (I find myself floating where the cockpit used to be). So far I've had this happen like clockwork 3 times. The only thing the ships had in common is that they had been docked to the same station and both ships happen to have at least one welder (I'm not at all sure this is in any way significant though).
When the ship is about to disappear, the game shows a flashing semi-transparent red bounding cube around it (like nothing I've seen before).
This is obviously rendering the game unplayable. Please investigate and fix ASAP.