[Bug]: <title> Page view issues: Sider does not collapse on button click or JS

[rjamesnw]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

Button to hide/show sider on a page layout is not working as expected:

That is the supported setting via the UI, but it doesn't work. I also tried JS...

I also have an issue where this setting is not respected when the width reduces to mobile size:

And this setting is ignored completely:

Expected Behavior

plMain.setSiderCollapsed(!plMain.siderCollapsed); should work, so should the button setting in the second image above.

For the "Sider Collapsible" setting, I should not be seeing it.

For the body padding, I should be able to set a padding for the content view.

Steps to reproduce

See images.

Environment

Version: 2.6.0-"dev #73ad9ee"

Additional Information

No response