As noted in a post by Aadil Shaikh from Android’s community team, a fix for the issue is in the works. If you're experiencing the bug, Google recommends turning off Select to Speak as a workaround to ...
Android owners who use the Select to Speak feature have encountered an issue where the volume keys no longer function as expected. Google has now acknowledged the problem and says a fix is on the way.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results