Sidebar Tree Collapses When Mounted Drive Updates

I'm using Panic's Transmit to mount my web server's filesystem as an external drive. Textastic can then display this drive's contents on the sidebar, and I can edit files live on my development server for easy testing. However, every time I save a file in Textastic and the mounted drive updates itself, the entire directory tree in the sidebar collapses on itself, meaning that I have to reopen all of the levels of folders I was working in.

I realize this is probably partially the fault of Transmit, but it would be very nice to have Textastic be able to handle updates to any mounted drive well, which it seems not to currently.