Dear @Vivaldi,
1. Open DuckDuckGo in Vivaldi on Linux (I’m on latest Fedora Silverblue)
2. Type something into the search input and press Enter.
3. Select the search term in the same text input by dragging the mouse from right to left.
4. Type something else.
Notice that the text direction is now right to left.
Screen recording of bug: https://vimeo.com/916244321?share=copy
Here’s the 6-year-old bug report:
https://forum.vivaldi.net/topic/26280/text-in-input-fields-sometimes-enters-backwards