Please try the following:
go to "Settings -> Editor -> Keyboard shortcuts" and remove the shortcuts for "Menubar -> Edit -> Cut" , " .. Copy" and "... Paste".
Why do you say that ?
I have/had similar issues with copy paste. Even sometimes ctrl-x cut's the text but when I want to paste it, I get old stuff from the clipboard.
I say that, because I had the same issues, and was used to type "ctrl+c" twice, and after removing the keyborad shortcuts everything worked as expected.
That means "ctr+c", ctrl+x" and ctr+v" also work without the keycode-plugin.
I didn't investigate more, but it worked for me and so I gave this hint.
Btw. I only had this issue on my linux-system, not on windows.
I've actually tried to look for that before, but there isn't a "Keyboard Shortcuts" section! Kind of weird. All I have under Settings -> Editor -> is
- General settings
- Folding
- Margins and caret
- Syntax highlighting
- Abbreviations
- Default code
- Source formatter
- Code-completion and symbols browser
And that's all!
It seems you don't have contrib-plugins installed and so keybinder-plugin is not installed (and can't be the cause for your problems).
I just re-enabled the shortcuts in C::B and at tht moment it worked.
If that will not change again, it's not keybinder-plugin that causes the issue.
I moved from kde (with klipper) to lxde with no extra clipboard-utility.
Perhaps it's klipper that interferes with (wx)scintilla.
If I had the issue with cutting some code that seems to be lost (other/older code was pasted instead), it was in fact in klipper's history.