Hello @Uwe Raabe,   I'm getting an unresponsive IDE and massive memory leaks after editing a property with MMX.  This is happening on RIO IDE.   I've attached a small mp4 video showing you my problem. I'm basically : - Opening a Delphi project - Opening a unit - Scrolling to the desired property and pressing "CTRL E" - Edit property dialog is opening. I then press cancel button   Actually : less than 1 seconds later IDE become unresponsive. Task manager is showing a BDS.exe process at more than 27% (I do have a quad core CPU) and eating 4Mb memory every seconds Expected : a working IDE 😉   I tryed to disabled all other experts (GExpert, Madshi madexcept...) in vain.   Regards, MMX Massive memory leaks.mp4