I have downloaded Dragon Quest 5 on my LG V60 UW. During the game there are transitions between a world/town/dungeon map and random combat encounters. Sometimes the combat encounters are a black screen where I can touch the buttons if I remember where they are and sort of ham-fist my way through it and the map area reappears after the combat is over. Other times the buttons don't work or ones I'm not used to pop up and I just have to kill the app and try again, losing some progress.
Usually killing the app and starting over again restores the normal functionality.
I have contacted Square-Enix support about the issue and their suggestion to me includes wiping out all my data and cache for my web browser as well as the google play store.
Does this step make sense to anyone? Has this worked to fix issues with other apps before? To the best of my knowledge this game does not interact with the web browser in any way. Likewise the app store is a separate app, and I would not imagine that the game shares data with it.