I have the same issue ... the latest update didn't help. The icons will show up after a soft reset, but disappear within a day.
Following this Seat and Steering Wheel Icon problem. I have the UConnect5 in my newly purchased 2022 RAM 2500 Big Horn. I'm wondering if it's an actual software problem vs a hardware problem?
Although I do occasionally have a software issue I have not seen the disappearance of these Icons. My system does sometimes take a minute to get back on track when I cycle the ignition. Seems my issues may be in the memory function. IE, if I'm listening to music on a thumb drive, when I turn the truck off like when I'm fueling and then restart, it may have changed over to the radio frequencies.
The touchscreen is way behind in its abilities to work properly. Sometimes I have to touch an Icon several times in order for it to work.
You would think for the price of these systems, (pretty much the same as a computer), and the availability of Alexa or Siri, you should be able to tell the UConnect5 system what you want it to do and never have to tap an Icon other than the initial setup.