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SUMMARY
System monitor does not show used memory of some processes

STEPS TO REPRODUCE
1. Open system monitor, go to processes page
2. find some processes without a value in memory column (example: Virtualbox with started VM)
3. No memory usage is shown

OBSERVED RESULT
No value of used memory

EXPECTED RESULT
All processes have a value of used memory

SOFTWARE/OS VERSIONS
Operating System: KDE neon 6.0
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0
Kernel Version: 6.5.0-28-generic (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i7-8750H CPU @ 2.20GHz
Memory: 15.3 ГиБ of RAM
Graphics Processor: Mesa Intel® UHD Graphics 630
Manufacturer: Dell Inc.
Product Name: XPS 15 9570

ADDITIONAL INFORMATION
In htop launches as user (not root), memory usage is shown, so there is access, no security block