You might want to call Sonos Support directly to discuss it. They could probably pass on the specifics of what you’re experiencing to the code team, including the specific characters that are failing. It might be as easy as just adding in ‘all characters’, it may not. 

Definitely a “Crowdstrike” situation. Is this another “moving offshore development and testing” failure? 

Same here, something went wrong with the recently released updates, having this issue for the past several months, no globe in yhe Sonos App keyboard