Shop freezes when selling a unit

When I sell a unit sometimes the screen freezes in the "Sell for 2g" screen. The unit gets sold and it doesn't go back to the unit buying screen. At this point i can't reroll or buy units. Have found that this can be fixed by selling another unit while in the bug. The unit is sold correctly and it goes back to the buying screen. The bug only happened a few times so I don't have a clear cause. NOTE: I sometimes have fps drops and lag spikes whike playing tft, it may be related with that. Hope you find a solution!