Local prototype links disabeled when using sidebar

Hello experts,

Since a short time the links in my locally published prototype don’t work anymore if the sidebar is switched on. If the sidebar is turned off (not just hidden), the links will work.

Is this a known phenomenon and is it perhaps related to security features of the current browsers? I knowingly didn’t change anything in the Axure settings.

When I save the prototype to Axshare, the links work, both with or without the sidebar.

Thanks in advance for your help!