managed to track it down loads of issues atm with chrome/edge moving from manifest v2 to V3 for extensions which is breaking alot of extensions. My issue was related to
https://issues.chromium.org/issues/442094023 and
https://chromium-review.googlesource.com/c/chromium/src/+/6681848 which is impacting latest version of chrome and extensions not loading. Basically adding --enable-features=WindowsNormalizeFilePathFallbackOnError to my chrome command line arguments fixes my chrome extensions. We redirect Chrome User data /Downloads to homedrives hence the issue