Srcset conflict after Resizing

Hi,

I’ve had the resizing option enabled for existing images outside the Media Library for a while and just recently noticed, that images uploaded via another plugin (Geodirectory) where downsized as well. However wordpress includes non-existing image srcset sizes in html as if those image sizes are still there, causing blank images appear depending on the view port size.

The link to example page is attached. The featured image has the largest size of 1400px, but in the srcset there are bigger sizes. You can play around with the view port size in case it looks good on your end.

Is there a way to cleanup those references to non-existent image sizes? Apparently I have accumulated a few hundreds of those over the years.

Thanks,

Roman.

The page I need help with: [log in to see the link]