Filesystem nav broken (possibly Linux only)

[lmmx]

I have a feeling this must be a Linux-only bug that noone's reported since noone is using this on Linux.

Could I confirm from a Mac user that this isn't seen on your machine?

• opening a R/markdown file works fine
• using the "Open file" navigation menu displays no files, and the filepath dropdown is empty (and cannot be typed into)
• clicking the up arrow errors out the entire Shiny app session

The stack trace points to mod.editr (a function for the packager I put together changing a couple parameters to editr) — I've replicated the issue when just using the plain editr function.

The inner end of the stack trace points to fileGet at line 54 which appears to be from shinyFiles

• Save works (and is even tied to Ctrl + S)

Happy to be assigned to fix this, just can't figure out precisely what's going wrong at the minute. (A variable "hidden" stores a list of shinyFilesButtons,

At a guess it seems the problem might be coming from shinyFiles:::shinyFilesButton('open') — so I might be best raising an issue on that repo instead?