To summarize, do I understand correctly that:
When power supply to the display is switched of by the PMU, that the display pulls the I2C lines low (which blocks the I2C bus) and this results in the PMU (in fact any device on that I2C bus) is becoming uncontrollable by the ESP32 and therefore power to the display cannot be switched on again by ESP32?
The ESP32 from that point would loose all control over the PMU?, including switching on/off power for other devices (e.g. GPS) and not be able to communicate with any I2C device on that bus anymore? And this dead-lock situation can only be manually reset with the power button?