Tracks dis-enable once record button is hit.

I have an issue hoping I can get some help with an older version of cubase VST 5.1 to be exact.
When I enable a single track or tracks to record, I hit the record button and they are no longer enabled. fortunately I have a pretty long pre-roll click set up so it gives me time to re-enable the tracks before recording actually starts but this shouldn’t be happening right ?
Thank you very much