1. Make a group plot with the 2nd plot has a recalculate lock.

2. Select Date menu - Lock Position - First Point. ? the lock is placed at 1st point of C.

3. Select Plot C, on MT Single Plot tab, click Plot on Right Y button. ==> The lock icon disappeared.

4. Polar r(X) theta(Y) plot has a similar problem.

Fixed in Origin2024b.