Codeblocks always show vertical scrollbar

[MarkusKeck]

Describe the bug

Codeblocks always show a vertical scrollbar even when no overflow happens.
There should never be a vertical scrollbar even when an overflow happens.
Only overflow-x should be possible.

Reproduction

Also appears on the official vitepress page

https://vitepress.vuejs.org/guide/markdown#code-groups

Expected behavior

No vertical scrollbar should appear ever

System Info

System:                                                        
    OS: Windows 10 10.0.19045                                    
    CPU: (32) x64 AMD Ryzen 9 3950X 16-Core Processor            
    Memory: 46.67 GB / 63.91 GB                                  
  Binaries:                                                      
    Node: 16.14.2 - C:\Program Files\nodejs\node.EXE             
    Yarn: 1.22.19 - ~\AppData\Roaming\npm\yarn.CMD               
    npm: 8.7.0 - C:\Program Files\nodejs\npm.CMD                 
  Browsers:                                                      
    Edge: Spartan (44.19041.1266.0), Chromium (108.0.1462.76)    
    Internet Explorer: 11.0.19041.1566                           
  npmPackages:                                                   
    vitepress: ^1.0.0-alpha.13 => 1.0.0-alpha.36

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.

[kiaking]

I can't reproduce this. Is anyone on Windows having the same issue? We can add overflow-y: hidden, but would like to know why this is heppening 👀

[MarkusKeck]

The scrollbar does not appear on Mozilla, but on Edge its also present.
Additional this only seems to happen on Windows, Linux and MacOS seem unaffected by this behaviour.

[MarkusKeck]

Adding overflow-y: hidden resolves the problem.
Some people I told to check on their windows system could reproduce this issue, some couldnt.

[kiaking]

@MarkusKeck Thanks for the check! I think adding overflow-y: hidden would make sense 👍 Would you like to create a PR? 😃