Bug 1766846 Comment 0 Edit History

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**Preconditions:**
Set the `High Contrast` option to ON from Windows (shortcut: Left Alt+Left Shift+PrintScreen)

**Steps to reproduce:**
1. Navigate to: https://docs.microsoft.com/en-us/learn/modules/csharp-write-first/2-exercise-hello-world.
2. Input text into the .NET editor located in the right-hand side.
3. Highlight the text from the editor (select with mouse or CTRL+A).
4. Observe the result.

**Expected behavior:**
The text is highlighted.

**Actual behavior:**
The text is not highlighted.


**Notes:**
1. Reproducible regardless of the status of ETP.
2. Reproducible on the latest build of Firefox Nightly.
3. Works as expected using Edge.
4. Reproducible on other pages with a built-in .NET editor
**Environment:**
Operating system: Windows 10 x64 PRO
Firefox version: :Firefox Nightly 101.0a1 (2022-04-27) (64-bit


**Preconditions:**
Set the `High Contrast` option to ON from Windows (shortcut: Left Alt+Left Shift+PrintScreen)

**Steps to reproduce:**
1. Navigate to: https://docs.microsoft.com/en-us/learn/modules/csharp-write-first/2-exercise-hello-world.
2. Input text into the .NET editor located in the right-hand side.
3. Highlight the text from the editor (select with mouse or CTRL+A).
4. Observe the result.

**Expected behavior:**
The text is highlighted.

**Actual behavior:**
The text is not highlighted.


**Notes:**
1. Reproducible regardless of the status of ETP.
2. Reproducible on the latest build of Firefox Nightly.
3. Works as expected using Edge.
4. Reproducible on other pages with a built-in .NET editor
**Environment:**
Operating system: Windows 10 x64 PRO
Firefox version: :Firefox Nightly 101.0a1 (2022-04-27) (64-bit)


**Preconditions:**
Set the `High Contrast` option to ON from Windows (shortcut: Left Alt+Left Shift+PrintScreen)

**Steps to reproduce:**
1. Navigate to: https://docs.microsoft.com/en-us/learn/modules/csharp-write-first/2-exercise-hello-world.
2. Input text into the .NET editor located in the right-hand side.
3. Highlight the text from the editor (select with mouse or CTRL+A).
4. Observe the result.

**Expected behavior:**
The text is highlighted.

**Actual behavior:**
The text is not highlighted.


**Notes:**
1. Reproducible regardless of the status of ETP.
2. Reproducible on the latest build of Firefox Nightly.
3. Works as expected using Edge.
4. Reproducible on other pages with a built-in .NET editor

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