Memory Leak using S3

When deleting a large number of foldes/subfolders/files in an S3 storage, the application runs out of memory:

WinSCP shows an error message box (Cancel/Try again/Skip/...): "SSL handshake failed: SSL error: malloc failure"
Windows Task Manager shows ~3.9 GB allocated for WinSCP.exe, slightly below the 4 GB limit.
Cancelling the task results in expectable subsequent errors ("Invalid access to memory location.") but not in memory being released, according to Task Manager.

Using WinSCP 6.7 (Build 17845 2026-10-14) on Windows 10 22H2 64-bit.