[Bug 50536] New: Copy pasting from Notepad++ does not work consistently

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50536

Bug ID: 50536
           Summary: Copy pasting from Notepad++ does not work consistently
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 69198
  --> https://bugs.winehq.org/attachment.cgi?id=69198
Screenrecording displaying bug behaviour.

## Bug description
When I copy things in notepad++ v7.9.2 on Ubuntu 20.04 it does not consistently
paste them (neither in notepad++ nor in other programs).

## Bug reproduction

1. At 0:03 I select the characters bc in notepad using the
`shift+->Shift+->Ctrl+c
  1. the clipboard now contains the characters `bv`
  1. At 0:04 I switch to Gedit with alt tab (shown as cAlt+<- ->)
  1. At 0:06 I copy paste the copied `bc` from clipboard with: Ctrl+v
  1. At 0:07 I do two new lines and paste again and do a new line with: <-| 
<-|  Ctrl+V <-| 
  1. At 0:09 I swith back to notepad++ with Alt tab (shown as cAlt+<- ->) and
go down one line with the arrow keys
  1. At 00:10 I select the fg characters left of the cursor with shift left
arrow twice: Shift+<-+Shift+<-
  1. At 00:10 I copy the selected `fg` characters with Ctrl+c
  1. At 00:12 I switch back to gedit with Alt+tab and paste the clipboard
content with Ctrl+c[![Display of unexpected behavior, last paste pastes `bc`
instead of `fg`.][1]][1]

[1]: https://i.stack.imgur.com/G2rh8.gif

## Expected behaviour
I would expect the characters `fg` to be pasted, but instead it pasts the old
clipboard content consisting of characters `bc`.

## Analysis
I have not found any consistency in this bug, sometimes I just have to press
Ctrl+c a few times to make sure that it actually copies it, and other times it
just won't copy the selection (after 10 presses).

Also, the bug only shows in notepad++ on Wine on Ubuntu 20.04, I did not notice
it in any other programs. I think this also rules out hardware/keyboard error,
as that would (most likely) not limit itself to Notepad++ only.

## Question
Is there some setting that I should change in Ubuntu, Wine or Notepad++, or is
this a (un)known bug?