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

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

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

Obsessing about clients outside of work hours.

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

Off the top of my ancient head:

General Introduction to Boundaries from Panahi Counseling:

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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.

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

Why are men obsessed with breasts and their size? I don't quite see women being obsessed with the penis - Why is this so?

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

Serious disappointment when the client cancels a session.

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

How did you cope when someone you love, dealing with hyper-independence and trauma, felt they needed space to heal alone? Were you able to support them without overstepping, and did you eventually reconnect? How did that journey unfold?

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