I submitted a save for the "I found a ring" call bug as well as a second save that shows a different variation of this bug where NPC sims (like the Goths) seem to forget they know each other & one of them will ask if he/she should hang out with their spouse, or kid, or get to know their kid or spouse that's living in the same house. In the first save the call about the ring in the bag will happen about 1 hour in game from the time the save was made. In the 2nd save Mortimer Goth will call my sim to ask if he should spend more time with Bella Goth or may ask the question if he should hang out with Bella Goth. This will happen about 45 minutes in game after loading that save at 10:38am.
If anyone wants to replicate this bug just create a new sim, get a girlfriend or boyfriend after cheating up high friendship and romance levels (I used 80 friendship and 90 romance), fast forward while periodically saving, then when the message comes in (it may take a few days in game though or maybe just a day or two) note down the time it showed in game. Reload the previous save and fast forward to that time again to see if it happens again at the same time. If it does, which almost certainly will, then that previous save you just loaded will be a nice bug example save to submit if they need any more saves on this.
The family member one may be even quicker to replicate since the phone call probably will happen within a day in game. Start a new save, go to the Goth house or any family house, cheat up the friendship with them all to about 80, make sure you're introduced, then go back to your lot and wait. You'll probably get a call within a day like Mortimer asking if he should hang out with Bella or asking if he should get to know Bella.
I hope these saves will help fix the lack of checks that are being done for these calls, because right now it looks like it's only check is on friendship level between the player's sim and the one doing the calling and romance level when it's going to be a question about the caller's romantic interest (which likely is the player's sim that they're calling and shouldn't happen). Added some screenshots showing the 3 messages I got from these 2 saves.