HP Prime corrupting programs

[scorpio72]

It says : Software version : 2018 02 12 (13441) and I have a C version of the HP Prime.

I noticed another effect after trying to launch a bad program (not only SVD2):

Shift 7 (List) now take some seconds (slow) to show the list of the variables.
Mem is around 7-8Mb

It's not solved by simple 9 "Reset", but need full Reset to get back Mem to around 17Mb and display List instantly.

This situation is happening not only with the app I mentioned but also with others. When I see the orange exclamation mark and a program doesn't run, I quickly check the Mem and I see a big drop with List display getting very slow...until I force a full reset (format C: ) or Apps-Esc-ON.

I believe there is a connection between Lists and overlapping programs memory area and RAM.