If this template helps then use it. If not then just delete and start from scratch.
OS (e.g. Win10): Ubuntu 20.04 LTS
PsychoPy version (e.g. 1.84.x): 2021.2.3
Standard Standalone? (y/n) If not then what?: virtual environment as suggested here Installation headaches and (partly) fixes on Ubuntu 20.04
NOTE: I didn’t go with Jonathan’s suggestion of installing a VM. There should be something easier than installing a whole VM. My Psychopy btw looks as glitchy Arboc described in that thread.
What are you trying to achieve?: Copy a component from one routine and paste it into another. Or even paste it into the same routine.
What did you try to make it work?: I right-clicked the component in the builder view and then chose the tab of the routine where I wanted to paste it. Neither pressing Ctrl+V nor clicking Edit → Paste actually pasted the component. Nothing happens.
What specifically went wrong when you tried that?: Neither pressing Ctrl+V nor clicking Edit → Paste actually pasted the component. Nothing happens. There is no error message either.
Include pasted full error message if possible. “That didn’t work” is not enough information.
If you’ve tried the above and it still didn’t work, I’m at a loss and I hope someone more knowledgeable can help out.