No Sidebars after Update

After a theme update (4.8.1. -> 6.6.3) there are some pages with no sidebars.
The settings are correct and normally the sidebar should appear.
Now I found out, if I deactivate the Visual Composer, the sidebars are correct shown.
If I activate the Visual Composer again the sidebars are gone again.
Where is the problem?
Thanks!

Hi,
See Widgets,
See: https://forum.tagdiv.com/topic/sidebar-does-not-see/

Yes, what happens with major theme updates — just like changing to new theme, is that your widgets can be reset — this is a failing of WordPress, although there are supposedly some plugins that mitigate this by keeping the transient settings intact for that across themes (habe not tried).

Additionally, in some cases the widgets will still be there on the widgets page, just “inactive” and you can usually simply drag the appropriate widgets back to the sidebar panels on the widget admin page.

Hope that helps.

Hi

In the “how to update” guide: https://forum.tagdiv.com/how-to-update-the-theme-2/ is specified that you will have to run the script that will import from database your settings, will change the shortcodes. Unfortunately you will have to re-add your widgets in the sidebars as some of them may not be imported or don’t exist anymore, also they will become inactive.

Thanks!

Hi!

I have seen that script too late. So I rebuilt the sides and I have rebuilt the widgets. Inactive widgets deleted.

Now I have even made an extra page for try out with a new custom sidebar (new widget).

If I want to change than the sidebar in this try-out-page, there is always the first sidebar, another sidebar (although it is there) has no function.
The sidebar position can be changed but I can not change to another sidebar, no matter what I do.

The same bug is with all other other pages. No possibility to switch to another sidebar.
WordPress 4.4, Newspaper 6.6.3, Visual Composer 4.9.1.

Thank you very much!

There is a note (Sidebar position/Custom sidebar):
The settings from this box only work if you do not use visual composer on this template. The template detects if visual composer is used and it removes the title and sidebars if that’s the case.

Is that the reason and what can I do???