xStreamBufferReceive(…, portMAX_DELAY) Task Moved to Suspended and Never Wakes on Data

[Nikolay-Po (Nikolay Pokhilchenko)]

Preliminary information:
The ISR of context switcher doesn’t trigger because the execution is already in an ISR - in SysTick ISR handler.
Is it normal to process RTOS API functions being inside of a SysTick ISR?