I don’t know whether this is related, but I found the Android app on my Lenovo Chromebook behaving oddly after the update, with heavy flickering and a top bar on the display that shouldn’t have been there. (I know Roon is not officially supported on ChromeOS, but it’s usually fine.)
When the app updated it asked for Notifications permission and, without thinking, I denied it. After a bit of poking around I found that this was the cause of the above misbehaviour. After re-enabling the Notifications permission I found that a restarted app stopped the horrid flickering and the extraneous top window bar vanished. The process is reversible/reproducible.
Like I say, it may be irrelevant to this case but there does appear to be some interaction between the new Android app and the Notifications permission which could be detrimental.