Mixer size..

This is something that I have found annoying for a while, but Im unsure if its a bug, OS limitation, or my own incompetence. Every time I open the mixer (non docked) it reverts back to a small size. If I resize the window so I can see the effects and sends and then if I close it, when I reopen the window it reverts back to its original size and I have to drag the corner again to see the sends/effects. Am I doing something wrong? (Other than closing the window, haha)

i totally have been getting this too. couldn't figure out if it was just me or not :P any ideas?

Happens here on reaper for windows both versions.