What are some signs that a therapist may have poor boundaries with their clients?

Off the top of my ancient head:

Frequent phoning or texting of clients to “check up on them and make sure they’re OK.”

General Introduction to Boundaries from Panahi Counseling:

If gays can get married, why can't I marry my dog or a cheeseburger?

Serious disappointment when the client cancels a session.

Routinely going over the time limit with certain patients, compromising the time for the next client.

Sense of competition with persons who are important in the client’s life.

Why do women have sex with dogs?

Session-expressed curiosities about client details not relevant to the therapy.

Eager anticipation (or anxious anticipation) of the next session in ways that distract.

Obsessing about clients outside of work hours.

How could Trump, with his deplorable garbage supporters, manage to win an election?

Struggling with fantasies of deeper connections with clients, whether sexual or parental or other intense or intimate relationships beyond psychotherapy.

These items can happen fleetingly, briefly, in any therapy, but if they’re frequent, it’s definitely time for the therapist to get some good, solid supervision/consultation.

Failing to mention the client in supervision/consultation, out of fear the supervisor/consultant will advise return to ordinary healthy boundaries.

Why cant I add weight to my lifts even though im completing my sets? Every time I try to add more weight I cant even complete one rep.

Disclosing feelings, fantasies, and experiences to the client in ways not related to the work the client is engaged in.