From command pallet, selecting 'CodeSync: Set external path', pasting a path in and pressing enter does not cause it to be saved; it keeps defaulting back to onedrive
Try upgrading to 2.4.0 and trying this again. I tried to replicate this and I could not. 2.4.0 adds logging. if you still experience this issue please paste your log here.
From command pallet, selecting 'CodeSync: Set external path', pasting a path in and pressing enter does not cause it to be saved; it keeps defaulting back to onedrive