Filter groups lose ordering and are changed incorrectly

I had the same problem. I needed the following:
Published = Yes AND
Content Type = X, Y
AND
Date (X) > now OR
Date/Time (Y) > now

But every time I tried to create the second group with the OR inside, Views moved one of the Date fields back into the first group so that it would show:
Published = Yes AND
Content Type = X, Y
Date/Time (Y) > now
AND
Date (X) > now OR

Only after many attempts to fool Views was I able to create the desired grouping. By creating a third group, then saving; then reopening, and seeing a strange set of two groups together without an operator between them--only then could I move the last date item into the second group, save, then reset the operator inside the second group to OR.

I have jQuery Update installed (dev), running PHP 5.4.

I may have discovered a completely different behavior that is causing this problem: When I grab a row to drag-and-drop it into a new group, I cannot seem to "ungrab" the row. If I am in the bottom group and move down to the Apply button, it forgets the change I set. If I move the cursor back up to a higher group (even after I clicked to "drop" it), it still moves the row I grabbed.

Only when I switched to the order-by-weight and group-by-dropdown display was I able to fully control the groups I was trying to set up.

Attached a patch to fix the random re-ordering of filters in the "Rearrange filter criteria" form.

Thank you jtwalters for updating this old thread with your patch! Worked perfectly for me.

Unassigning @jtwalters