i have installed WinSCP v5.13.6 today. But the Bug is still alive. When i start Putty (called from Winscp) i must enter the passphrase of the key again, even though i have entered it at the winscp login.
Putty is V0.70 and i have updated Wnscp 5.13.5 -> 5.13.6 and 2nd a complete fresh install of 5.13.6
I have accept "rember session password and pass it to PUTTY (SSH)"
Thanks for your report. Indeed. I have propagated the fix incorrectly to 5.13 branch. I'll fix it in the next release.