sidebars missing on product pages

Hi
i got a strange issue.
Theme storefront : shows my sidebars
Theme Enfold : Does not show my sidebars (poducts are full width)
Theme Shopisle : Does not show my sidebars

I checked:
Sidebars do exist
Themesettings
Shopsettings
CSS
functions.php
disabled all plugins (except woo & maintenance)

Thats really strange since i never tried to modify the themes shopisle or storefront.
The only theme i tried to modify a bit was Enfold but i resetted the modification.

Any idea what that could be?

Kind regards axel