This specific CAN2 config crashes during HAL_CAN_Init(), why

Lets hope someone has a felicitously revelation, or a clue.

I am using a custom board with a nice stm32f105rbtx, fed with external XTAL.

Everything worked like a charm untill i configured the clock to be 72Mhz and readjusted the can parameters in CUBEMX to match 125.000bauds 

when i run the generated code it crashes riight here in HAL_CAN_Init();

The init function timeouts right here and returns HAL_ERROR

/* Check Sleep mode leave acknowledge */
 while ((hcan->Instance->MSR & CAN_MSR_SLAK) != 0U)
 {
 if ((HAL_GetTick() - tickstart) > CAN_TIMEOUT_VALUE)
 {
 /* Update error code */
 hcan->ErrorCode |= HAL_CAN_ERROR_TIMEOUT;
 
 /* Change CAN state */
 hcan->State = HAL_CAN_STATE_ERROR;
 
 return HAL_ERROR;
 }
 }

I have no idea why the canbus "stays in sleep mode" during initialization with this config.....

CubeMX file attached

Edit: now it happens with every canbus config, even old commits that were working previously.