When editing a markdown in word wrap mode, entering a backtick leads to wrong wrapping temporarily

[xpomul]

Bug Description:

I am editing a markdown file in Theia with word wrapping activated.
I have a long line that wraps, so I am on the second line line.
If I now want to type a code-snippet by entering a single backtick, basically the cursor is moved to the rightmost column of the currently edited line along with the complete line that is currently edited. Since the string is actually shorter than the available space, part of the previous line is also rendered until the beginning of the line is reached. So it seems like if a part of the first line is duplicated (but it is only a rendering issue which will go away when any character is entered.

Steps to Reproduce:

1. Start Theia
2. Create a new Markdown file (e.g., Readme.md)
3. Enter a long line until it wraps to a second line
4. Enter a single backtick

Additional Information

• Operating System: MacOS 15.3 (M1 Max, arm64)
• Theia Version: Theia IDE 1.58.100

I cannot reproduce this in VS Code 1.97.2

Markdown.Issue.-.SD.480p.mov