UI. The Edit text filed prints redundant question mark when i click Ctrl+C or Ctrl + V under Windows 10

Windows 10, target = JVM
repo: https://github.com/korlibs/korge.git
run gradle korge-sandbox:runJvm

steps:
1 open project
2 run it gradle korge-sandbox:runJvm
3 select the "UI" value in the samples dropbox
you will see the Edit text field under the horizontal scroll bar with the "TextInput" text
4 Select all the text via mouse
5 Click Ctrl + C

Actual result:
you see "?" insted of your selected text

Expected result:
You should see selected text "TextInput"

additionally:
if you Click + V you see "?" + your copied text in that field

Run `gradle korge-sandbox:runJvm` on Windows 10 and select the UI sample to reproduce the Edit text field behavior. Trace the field's Ctrl+C and Ctrl+V handling, then verify that copying and pasting `TextInput` no longer displays or inserts a redundant `?`.

Written by the indexing model from the issue text.