Page categories blank after JRE update

[mariosm1]

Describe the bug
Categories do not appear in page metadata after the JRE install used by the cms is updated while the system is running. Restarting the cms fixes the categories.

To Reproduce
Steps to reproduce the behavior:

1. Add categories to the CMS under Administration > Categories
2. While the system is running, replace the JRE install in the Percussion/JRE folder, or update it with a package manager if it's sym linked
3. Wait a little while then edit a page
4. Go to Actions > Edit Metadata
5. Open the Categories view. Categories should be blank

Expected behavior
Updating JRE should not affect the Page Metadata categories.

[natechadwick]

@matomario8 When the system JRE is updated the CMS service will always need to be restarted if the /JRE is linked to a system JRE.

[natechadwick]

If they are using yum, a tool like needs-restarting from yum-utils https://man7.org/linux/man-pages/man1/needs-restarting.1.html can list services that need restarting after an update.