未対応ブラウザ向けのHTMLのみバージョンでメッセージ内容が表示されない

[david (David Taylor)]

@awesomerobot

so it seems like we may need to update our browser detection to include static content for iOS 15, thanks for reporting it

Ah yes, thanks for the report @heaving_year4v. This should fix it:

DEV: Update 'modern mobile' regex following iOS 15 support drop