Latest large Image size compression generating incorrect file permissions

[michael.moody]

The Latest large Image size compression is generating incorrect file permissions. I have tested on all 5 of my sites. I have also eliminated all plugins and themes and built a new site to test. Not sure about other platforms or servers, but I use Microsoft IIS-10. if you correct the permissions through the O/S WordPress changes them back (only for "Large Size", I have tried a variety of other compression plugins and added various PHP coded to functions.php (tried in 3 Themes) and even wrote a plugin to disable the compression, the thumbnails and all other sizes work and show correctly, just not the Large Size, the problem does get corrected if you increase or decrease the "aspect ratio" of the "large size" image, but that has to be done manually and I must have over 10,000 images. The problem started about 2 or 3 months ago (with the latest 2 or 3 versions of WP), thanks