Then I go to another mech, my Catapult in Bay #10, and see this: http://i.imgur.com/wItMg1X.png
So, I reset those LRMs back to the weapon group where I want them and save...but then go back to my Jenner, and get this: http://i.imgur.com/zZUSTgD.png
(Edit: Note, on the third screenshot, even though I'm on my Jenner, it still displays the weapon info for the LRM-15's I have on that stock C1 - it shows the last thing I had moused over, but that much appears to just be a display bug, since it does the same on every other mech without causing the issue)
As far as I can tell, this only seems to occur with the mechs in bays 8 and 10 (or maybe it's the JR7-F and CPLT-C1 specifically conflicting?), but I kept wondering why I'd get into matches and be using alphas when I left clicked...well, that answers a few things. This only occurs when SAVING a weapon group change on either mech; just looking at one doesn't reset the weapon groups of the other. BTW, to show what I mean by "bay 8/10", here's what my mechbay looks like right now: http://i.imgur.com/7e80Jnm.png
I tried adjusting the weapon groups on all of the other mechs in my bay, and none of them experienced the same bug - however, if the bug links mechs in specific bays and resets their weapon groups, it's possible that having the trial mechs where they are is hiding a similar bug. Since there's no way to manually rearrange the mechs without selling them off, I don't have a good way of checking to see if other mechs/bays are affected.
Edited by durandal, 21 April 2014 - 11:01 PM.