Active Backdrop background and image size globally for all user

[kfdlean 0]

Hello,

I have a question regarding the “Show background images” display option. When this setting is enabled, which file in the system folder is modified?

To give you some context: I enable this option on my server because it improves the overall appearance. However, for some reason, it automatically disables itself for all user accounts. As a result, I have to manually re-enable this setting for every user, which is quite inconvenient. Same thing for the image size.

If I knew where this option is configured at the system level, it might be possible to enable it by default. I assume there must be a variable that determines whether this option is disabled by default, correct?

Thank you in advance for your help.

[Happy2Play 9780]

Issue is I believe both these options are actually user per client settings.  And are not controlled by css.

Not sure if the new copy data to user function in Beta would help here.