Invalid floating point operation

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Error
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Invalid floating point operation

Please help us improving WinSCP by reporting the error on WinSCP support forum.
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OK Help Report
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WinSCP Version 5.5.6 (Build 4746)
Windows 7 Ult SP1 (US)
Transfer Protocol (doesn't matter -- SFTP, FTP, SCP)
GUI (explorer, probably doesn't matter)

Process to repeat on my system -

If I launch the program and leave the window alone it seems to work just fine however if I attempt to resize or move the window things often go sideways. I seem to be getting 100% failure if I attempt to drag a maximized window however occasionally I get errors on other drag cases as well.

I know dragging a maximized window isn't something most people do very often, however I am running a 4k screen with MaxTo to split it up into 6 "monitor" like regions, and I suspect this kind of usage will become much more common for your user demographic as time progresses.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to address you have used to register on this forum.

I got the debug version email this morning. I have been failing to duplicate the problem using both the debug and the std version.
I did update my VC++ libraries yesterday during a different application installation which is the only change I can think of.
I will keep watching for problems and reply to this post if it returns.

Thanks for your feedback.