Newest RC, when you edit file and save, it does NOT reupload

Version 5.18.4 RC (build 11387)

Open a file as I've done for 5 years - opens in sublime text 3 - make a change, save it. File is not saved back into WinSCP. Big issue, downgrading to last major release works fine. So something with this RC.

Thanks for your report.

This bug is being tracked already:
https://winscp.net/tracker/1985

I'm sending you an email with a development version of WinSCP to the address you have used to register on this forum.