fix position of side bars

Have you tried a plugin like this?: https://wordpress.org/plugins/sticky-menu-or-anything-on-scroll/

You should just need to provide the IDs of the sidebars.

Let me know :)

Basically "sticky-menu-or-anything-on-scroll" works. But there are some restrictions:

1) The actual version just deals with one menu. So both side-bars are not manageable. Improvement should be in next version.
2) If I have a longer menu that hides under the footer the content there is out of view. There is no "overflow-y: auto;"-functionality. But maybe I just do not know how to activate.

So I still need help.

Thank you,
Walter

What if you removed your custom CSS relating to the sticky sidebars now, and then add this:

.inside-right-sidebar, 
.inside-left-sidebar {
    max-height: 100%;
    overflow-y: auto;
}

Let me know :)

It works so far - but the behaviour is not perfect.
Calling a page the first look is without a scroll bar - even if the text is longer:

I have to scroll a little bit the main page, that the plugin seems to start and the scrollbar of the side bar is activated:

How to get the first page started already knowing, that a scrollbar should be presented?

And there is still the bottleneck of just have one sidebar sticked.

Thank you for further ideas,
Walter

I suppose you could try replacing:

overflow-y: auto;

With:

overflow-y: scroll;

"overflow-y: scroll;" did not work properly. It created a kind of shadow scroll bar in the background. After further tests with two other plugins (Q2W3 Fixed Widget, WP Stickit) I stay with "sticky-menu-or-anything-on-scroll".

My settings are:

.inside-right-sidebar,
.inside-left-sidebar
max-height: 100%;
overflow-y: auto;
bottom:0px;
}

To have the scond side bar sticky as well I have to wait till the next major release.

I will stay with this solution so far.

Thank you Tom,
have a good day!
Walter

Glad you got something working :)

*** Addendum and update ***

At the end I deactivated the plugin "sticky-menu-or-anything-on-scroll".

At every page change it created a micro-flickering of the sticky sidebar containing a sub menu.
At the end it seems that there is no really professional sticky side bar plugin available.

But if someone knows one, please let me know ...

Have a good night,
Walter