Qt and Gtk applications have two different copy & paste stacks. During everyday computer usage, you happen to copy and paste various strings of text. Now for example let's assume that if I paste into Konsole, I will get "hello" text. And now let's paste into Firefox or another Gtk application: I will get "how are you" instead of "hello". In Klipper (I don't remember if it is the correct name), I do not see "how are you" (the Gtk related paste)
If I understand https://blog.martin-graesslin.com/blog/2016/07/synchronizing-the-x11-and-wayland-clipboard/ correctly, this is a known issue.
Problem is no longer happening on 5.14.4
Reopening the bugreport. I found a very particular use case. 1) I opened Dolphin, then Help->About Dolphin 2) I selected the line "KDE Framework 5.54.0" then right click, copy. 3) I tried to paste in Firefox, in a bugs.kde.org bugreport form, but Firefox did not paste anything. 4) Tried with pasting in a Qt application like Konversation: paste was successful. 5) Tried to paste into another Gtk application, so I opened Thunderbird. I cannot manage to paste the text.
(In reply to Germano Massullo from comment #3) > Reopening the bugreport. I found a very particular use case. > 1) I opened Dolphin, then Help->About Dolphin > 2) I selected the line "KDE Framework 5.54.0" then right click, copy. > 3) I tried to paste in Firefox, in a bugs.kde.org bugreport form, but > Firefox did not paste anything. > 4) Tried with pasting in a Qt application like Konversation: paste was > successful. > 5) Tried to paste into another Gtk application, so I opened Thunderbird. I > cannot manage to paste the text. Already reported as bug 404822
I believe it is reproducible with Spectacle copy to clipboard features.
FTR both Firefox and Thunderbird are likely running under XWayland so it's more likely that this is the culprit instead of them using GTK. 1) I opened Dolphin, then Help->About Dolphin 2) I selected the line "KDE Framework 5.54.0" then right click, copy. 3) I tried to paste in Firefox, in a bugs.kde.org bugreport form, but Firefox did not paste anything. 4) Tried with pasting in a Qt application like Konversation: paste was successful. 5) Tried to paste into another Gtk application, so I opened Thunderbird. I cannot manage to paste the text. This works for me with current master. Do you still have the issue with the 5.22 beta?
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!
I cannot copy paste from Firefox Wayland to Konsole Plasma 5.22.4 KDE Frameworks 5.83.0 Qt 5.15.2 Fedora 34
(In reply to Germano Massullo from comment #9) > I cannot copy paste from Firefox Wayland to Konsole > > Plasma 5.22.4 > KDE Frameworks 5.83.0 > Qt 5.15.2 > Fedora 34 I had to reboot the machine to temporarily fix it (terminating the session did not work since I got a black screen and I had to reboot from TTY)
I am having the same problem under Arch Linux + Wayland. See the details below. SUMMARY Under Wayland, middle mouse copy-paste doesn't work between GTK and Qt applications. STEPS TO REPRODUCE 1. Start KDE Plasma under Wayland. 2. Using a mouse (left button pressed), highlight some text in a GTK application, say, Google Chrome. 3. Move the mouse to a Qt application (for instance, kedit or konsole) and middle-click. OBSERVED RESULT The highlighted text in the GTK application is not copied into the Qt application. EXPECTED RESULT The highlighted text in the GTK application should be copied into the Qt application. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Arch Linux (available in About System) KDE Plasma Version: 5.22.5-2 KDE Frameworks Version: 5.85.0 Qt Version: 5.15.2
Clipboard has changed significantly on 5.23. Please create a new report if you have issues there.