Not on one of my Canons, it will blink ISO if it gets a blank cassette (even if you set it menualy) so you are never sure if you have it right
Which canon model does this? (sounds like some inner electronic glitch/malfunction)
I use a 1n, 1v and had a 3 but sold it and they all worked fine with the reused factory cassettes. (I taped the bulk film to the last few inches of a used up factory load)
Are you worried the winder will rip the end if you tape your bulk loads?