Grit your teeth and bare it for now whilst you are looking. Don't denigrate your current employer in public or online however much they deserve it.

It is always easier getting a job if you have a job, prospective employers are wary of people out of work.

Badmouthing an employer also won't help either, it is so easy to go online and research someone these days and HR departments do it routinely to get background on prospects.

Good luck.