MC's hint line unexpectedly relocates to the top line

["Dmitry N. Mikushin" <maemarcus gmail com>]

Hi,

This is the second time I see this effect: when doing certain actions
(probably, starting file copy and canceling it), the hint line
migrates from its usual place in the bottom to the top screen line. Is
it a bug or an occasionally pressed hotkey?

GNU Midnight Commander 4.7.5
Built with GLib 2.27.1
Using the S-Lang library with terminfo database
With builtin Editor
With subshell support as default
With support for background operations
With mouse support on xterm
With support for X11 events
With internationalization support
With multiple codepages support
Virtual File Systems: cpiofs, tarfs, sfs, extfs, ftpfs, fish
Data types: char: 8; int: 32; long: 64; void *: 64; size_t: 64; off_t: 64;

Thanks,
- D.