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

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

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

Obsessing about clients outside of work hours.

Taking five minutes a day to do this can improve happiness, study finds - San Francisco Chronicle

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

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

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

Non adipisci autem repellat fugiat.

Off the top of my ancient head:

General Introduction to Boundaries from Panahi Counseling:

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.

What are the potential side effects of combining Clonazepam and Propranolol?

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

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

Serious disappointment when the client cancels a session.

Pain relief breakthrough as scientists discover a safer, non-addictive approach - Earth.com

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