I have a setup with 3 screens (laptop + 2 external monitors), each of them has a Panel with a taskbar, set to only show windows from current screen. After I disconnect the monitors, the taskbar on the laptop's screen no longer shows any windows. The problem persists even after I reconnect the monitors. To restore the normal functionality, I have to remove the tasbar from the panel and re-add it, or log out and back in.
A lot has changed since this bug was filed. Is it still reproducible for you in Plasma 5.25? We made a lot of multimonitor improvements in that version.
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!