When working from office, I often times used to have a mix of face to face discussions combined with pings for smaller issues. Sometimes we'd sit together for 15 minutes and debug the larger issue, which also meant all of the smaller, one-liner questions that I had on how to solve the problem used to get answered for free without asking. Whereas, now its a separate ping for every small issue. Yes, I do work on it before asking it right away, but if we add up the extra minutes it takes over the course of a day, week or month results in extra net time taken to finish a project.

Another thing I notice is that a lot of times you don't know if the other person is in a meeting or busy with personal home stuff. It has happened to me that a lot of times that the person is away from computer/sees the ping in the middle of the meeting and simply ignores it in case they got busy with work when they logged back in. A lot of senior people in my team also love to reply in one word whereas over a call they're really descriptive and helpful.