Sidebar cannot be displayed on the vendor page.
When Sidebar is enabled, nothing is displayed and it is blank.
No matter which widget you select, it will not be displayed. Also, the left and right display of Sidebar cannot be switched, and it is always fixed to the right side.
I also stopped and checked all the other plugins.
When I changed the theme, the widget set in Sidebar was displayed at the bottom of the page.
Sidebar is displayed normally on other pages, but it seems that the display is strange only on the vendor page.