Touch Controls bug out when Using a Controller

When I use a bluetooth controller with my phone, and I go into a sign or book or something that you can write on, when I exit, the touch controls and the controller controls try to "merge." Then the touch controls get stuck and bug out, I then have to exit the game and rejoin. This even happens when I use the search menu on crafting!

HOW TO CREATE
1. Get onto a Minecraft world while having a bluetooth controller connected to a phone or tablet
2. Write on a sign or book or the search menu on crafting.
3. Exit out of the sign or book or try to click the thing you just searched up.
4. Voila, your controls have "merged"