Error when navigating to overriding block of styles [fixed in 5.8.1]

This happens in BS 5.8.0 (linux appimage) and Kubuntu 20.04

When I hover over a yellow notice next to an overridden style at the “Styles” panel and click the “See Block” button I get the following message window

Error KIO Client
Unable to run the command specified. The file or folder /tmp/.mount_BootstlFcAn6/resources/app.asar/app/index.html does not exist.

It seems to work functionally but I see that error message every time.

Thank you for reporting this issue. We will fix it in our next update.