Chats no longer refresh since recent update, requires "backing out" or force close to refresh

Since around 1.5.12 I believe (at least 1.5.14), I've noticed that when I open the app, the chats no longer refresh, and I'm seeing old messages from the last time I used the app. I have to "back out", force close, or clear the cache (in Settings) for it to work again. Only then does the "rolling" green loading indicator cycle along the top of the chats and they begin refreshing. Still, even after this, when I open the app again later on, it has not refreshed since that time. I'm currently using 1.5.18 and the issue is still there.

I am not seeing this on the desktop/web clients.

I'm using Synapse 1.74 on Ubuntu. The device is Android 13 on a Galaxy S22. Thanks!