I'll leave this issue open as it was reported against Rocky, and as anybody still on Rocky (or Stein) may still be encountering this issue, and still want a fix. But, for those that can move forwards - Train seems to resolve the underlying problem here, and eliminate the need for us to use IMAGE_RESERVED_CUSTOM_PROPERTIES to work around the problem.
I'll leave this issue open as it was reported against Rocky, and as anybody still on Rocky (or Stein) may still be encountering this issue, and still want a fix. But, for those that can move forwards - Train seems to resolve the underlying problem here, and eliminate the need for us to use IMAGE_RESERVED_ CUSTOM_ PROPERTIES to work around the problem.