Our club had a similar problem on two of the six tablets we use for glass panels about two or three months ago. Maybe this was concurrent with updating the JMRI version or maybe nobody noticed it earlier as those two panels each control remote portions of the eleven scale miles of dual track main line that have little switching activities.
When we compared the version numbers for the Chrome app, those two tablets had much older versions than the tablets not showing any problems. Most of our tablets were donated by members who had moved on to more trendy gadgets, so we had some "version deficit" issues that should have been noticed earlier.
Since we do not have access to the Internet at the club, it was necessary to bring them home, log onto our local WiFi router and request Google Play to do an update. Unfortunately that took most of a day, since a lot of stuff that I thought we had deleted got updated too. My fat finger skills with smartphones and tablets is mostly limited to phone calls and Engine Driver.
Both tablets work as they had been and that problem is now behind us for the time being. Our only glass panel problem now is that we have to turn them off during Open House sessions, since stray fingers seem to invade us from time-to-time.
This experience is anecdotal from what I can tell, but there may be some value in sharing it.
Cliff in Baja SoCal
