Question Please consult the switching of multiple state machines and the timer issues therein？

Hey, guys, I found a strange thing. If I create three state machines, called abc, and use a timer to switch their transitions, the timer in the b state machine cannot complete all of them, and it will stay at 0.99. If only two state machines are normal, but the timer in the b state machine will have a time difference. Why does this happen?

These are three states

This is the code for status a

This is the code for the B state. Debugging does not produce text

This is the code for state B, which can be debugged to produce text

This is the code for the c state


As shown in the figure, when the state machine enters state b, the first timer debug does not produce srting b. The final results are only a and c。