We have several SG3452X devices.
A few days ago I updated all the devices to the latest firmware. 
Updated from 1.20.2 Build 20240115 Rel.73737 to 1.20.4 Build 20241206 Rel.37607
Since then, I've been having problems with devices that have an SM331T module inserted in the SFP port. 

The problem is that after a few hours of use, network connectivity on these ports is lost. The light next to the SFP port is not lit. If I unplug the UTP cable from the SM331T module and plug it back in, it still does not work. If I unplug the SM331T module from the SFP port and plug it back in, it fixes. It will then work again for a few hours and then stop again.

I use SM5310-T modules in many SFP ports. No problems with these.

After reverting back to the previous firmware the problems disappeared. It is likely that the new firmware is causing the problem.