Mousing over the "Buy Back" button in shop instead highlights the "Shop" button

As described in the title, I’m doing echoes in the non-Empowered Ending the Storm timeline. The end-of-echo island shop has a bug where if you mouseover the “BUY BACK” button while you are using the Shop tab, the “SHOP” button highlights instead.

When you’re in the Buy Back tab, mousing over Buy Back does nothing, but mousing over Shop highlights Shop, as it should.