Shift sensor inadequate power cut when using throttle

[SnowDrifterr]

BBSHD

Current FW version 1.3.1

MCU IAP15W4K61S4

Eggrider display

Noted that when using PAS, shift sensor interrupt duration behaves as expected

But when using throttle, the motor will cut power for a fraction of a fraction of a second, then ramp power back on, before the shift can complete. This behavior happens independent of the shift interrupt duration settings.