microsoft / microsoft/pxt-microbit

Simulator new functions are hard to see in High Contrast and Dark Theme after adding Jacdac extension

Open
#6,363 0 comments 0 reactions 1 assignee View on GitHub

@thsparks is already working on this.

Since Jun 20, 2025.

P2 theme
Dominant language
TypeScript
Stars
804
Forks
721
Avg merge
2d 9h
Merged PRs (30d)
2

Description

Describe the bug
When the Jacdac extension is added to the toolbox, the visibility of certain simulator new functions are significantly reduced in High Contrast and Dark Theme modes.

Steps to reproduce the behavior:

  1. Navigate to https://makecode.microbit.org/beta#
  2. Click on SettingsThemeDark or High Contrast.
  3. Open a new project.
  4. Click "Extension" ->Type Jacdac in the search bar.
  5. Click the Jacdac card to add the extension.
  6. Observe the new functions at the bottom of the simulator.

Actual behavior
Simulator new functions are hard to see in High Contrast and Dark Theme after adding the Jacdac extension.

Expected behavior
Simulator new functions should remain clearly visible in High Contrast and Dark Theme after adding the Jacdac extension.

Screenshots
Image

Additional context
1.OS: Windows 11 24H2
2.Browser: Chrome, Firefox, Edge
3.makecode.microbit.org version: 7.1.44
4.Microsoft MakeCode version: 11.4.30

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Assessment

This issue has not been assessed yet.

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.