RZG2UL: PWM issue with 0% and 100% duty cycle

We are using RZG2UL SOC based custom board with Linux BSP version 3.0.3.
When using PWM mode for MTU3 (MTIOC3A) pin. We are facing below issues for PWM

1. If PWM is disabled the pin goes to high state
2. If initial PWM duty cycle is set to 100% pin goes to low state
3. If inital PWM duty cycle is set to less than 50% and then if duty cycle is increased to 100% pin goes to low state
4. If initial PWM duty cycle is set between 50-90% and then if duty cycle is increased to 100% pin goes to high state.

Is this behavior expected? How can this issue be fixed?