Well, its not uncommon situations when the boss youre fond of changes for another one you can barely stand.
I had a symphathetic boss that always relied and trusted on me and my work. That was pretty motivating at that time.
Then the next one was just weak (from my perspective) in technique, leadership and possibly even personally. And despite not adding anything to the department work, he still wanted to remind about the hierarchy there.
No wonder Ive finally decided to move on to another department few months after working with him. Unfortunelly pandemic happened and delayed my plans for an extra year, but I managed to change back in march for an IT department, whats being awesome to me so far, despite not having any free weekend or holiday since. My boss doesnt seems that great human being but seems wise enough to not bother others too much in their works.
But I expect him to move back to the main company later in the year so...