Bugzilla

**Affected versions**
* 89.0a1(20210412213434)

**Affected platforms**
* Windows 10x64
* macOS 11
* macOS 10.15.7
* Ubuntu 20

**Steps to reproduce**
* pref set to true : browser.proton.enabled
1. Launch FF.
2. Go to about:preferences.
3. Inspect the sections legend(left side) and their icons.

**Expected result**
* The Icons for General, Search and Privacy and Security are as per mock-up documentation.

**Actual result**
* The Icons for General, Search and Privacy and Security are not as per mock-up documentation.

**Regression range**
* Not a regression, Proton specific

**Additional notes**
* Seeing as how none of the icons have been implemented, I would consider that this greatly affects the Proton experience, setting this as an S3.
* This issue occurs for both browser Light, Dark and Alpenglow themes.
* This issue occurs for both OS Dark, Light themes.
* Icons for Sync and Nightly Experiments are not affected since they are not yet ready.

**Affected versions**
* 89.0a1(20210412213434)

**Affected platforms**
* Windows 10x64
* macOS 11
* macOS 10.15.7
* Ubuntu 20

**Steps to reproduce**
* pref set to true : browser.proton.enabled
1. Launch FF.
2. Go to about:preferences.
3. Inspect the sections legend(left side) and their icons.

**Expected result**
* The Icons for General, Search ,Privacy&Security, Sync and Nightly Experiments are as per mock-up documentation.

**Actual result**
* The Icons for General, Search,Privacy&Security Sync and Nightly Experiments are not as per mock-up documentation.

**Regression range**
* Not a regression, Proton specific

**Additional notes**
* Seeing as how none of the icons have been implemented, I would consider that this greatly affects the Proton experience, setting this as an S3.
* This issue occurs for both browser Light, Dark and Alpenglow themes.
* This issue occurs for both OS Dark, Light themes.