I was playng in save with merc and then i puted soap i heated it at max temp(don't ask why) and then i clicked while i had gravity well on and then heated the mercury nd it went HUGE and it was at normal temp
Probably some glitch happened with the SOAP and it formed a bubble with the MERC, which shouldn't happen. When they are linked together the soap can modify things like the variable that controls how MERC expands.
The new beta (90.0) fixes this though. If a bug causes the SOAP to connect with MERC it won't be able to change any of MERC's data.