Ability to reload modified files

I'm using Textastic to view and modify text files stored on a cloud drive (pCloud), which is generally working well. However, if I have a file open in Textastic and modify it from another computer, one of the following happens:

• In some cases, the open tab just closes
• In other cases, the file remains open, but doesn't refresh with the modified version of the file

I can work around this by re-opening the closed tab, or by closing and re-opening the Textastic app.

I'd prefer if the tab didn't close, but a message appeared stating the file has changed, and asking if I want to reload it. Alternatively, just a menu option to reload the current file would be a reasonable solution.