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

Obsessing about clients outside of work hours.

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

Serious disappointment when the client cancels a session.

TRUMP memecoin ‘hasn’t pumped’ after Eric Trump says WLF will buy big stack - Cointelegraph

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

Off the top of my ancient head:

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

Pro-AI Subreddit Bans 'Uptick' of Users Who Suffer from AI Delusions - 404 Media

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

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

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

Can adults grow new brain cells? - Live Science

General Introduction to Boundaries from Panahi Counseling:

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

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

Why are there so many girls and not enough boys to follow?

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.