I thought this was fixed but we’re still able to load workspaces on a mobile device (phone-sized in my case) that were originally created on desktop, which results in:
in the sidebars.
iOS v18.6, Obsidian v1.9.6.
There may be an easier way, but I was able to resolve the sidebar issue by renaming the VAULT/.obsidian/workspace-mobile.json file, restarting, and letting Obsidian create a new one.