Built in closet drawers falling off track

I have built in closets in my daughters room in our new home and the bottom 2 drawers are consistently falling off the track. I suspect that the left and right walls of the drawer are flaring out making the runners too wide for the drawers to catch (forgive me if I'm using the wrong words to describe these things).

Pictures below including a wooden support they built in to allow the drawers to not hit the side of the closet when they open.

Can anyone please offer me any advice or suggestions on how to potentially get this issue resolved? Thank you in advance!

Drawers after opening, have fallen off runners

Closet with drawers, before opening bottom 2

Closer view of wooden support on left

Closeup of wooden support

Screws on other side holding wooden support to drawers

Picture of the track

Picture of the runner