I have just released #TangerineUI v1.9.5 with a workaround for this issue where the bottom toolbar could overlap with the system UI on iOS when Mastodon is added to the Home Screen.
Thank you @matt for reporting this issue!
(I have added this workaround to both the ‘main’ and ‘legacy’ branches.)
https://github.com/nileane/TangerineUI-for-Mastodon/releases/tag/v1.9.5
https://isfeeling.social/@matt/112128206141990927