Weatherstripping fail

Was getting in my truck today and noticed that the weather stripping at the top corner of both back windows is peeling back. Anyone else see this? Is there an easy fix?

 

No experience with your specific situation, but years of old cars makes the general concept familiar.
Over time weather stripping will shrink. Keeping it moistened with detailing products will help slow it, but if the vehicle spends any time in the sun - it happens.
Proper fix, is to replace it if it's still available from the dealer. Not easy & is expensive.
You could 'glue down' those corners with a gasket glue, something for rubber products. Available at a body shop supplier, or thru toyota. Just be careful you don't use so much to cause water damming. Leave an opening for water to flow past your patch of glue so water doesn't back up above the window & possibly leak in. Good luck.

 

Thanks! I’m in south Texas……so, yes, sun is a factor