Steps to reproduce:
1. Create a new project
2. In the toolbar, press "Edit" then "Preferences..."
3. Type "tint" in the preference window search field

Expected result: Preferences window filters the tabs to only show the "Colors" tab in which you can find the word "tint"
Actual result: Preferences window doesn't find the word "tint" anywhere

Reproducible with: 2018.4.15f1, 2019.2.17f1, 2019.3.0f4, 2020.1.0a18
Could not test with: 2017.4 (The search function for the preferences window was not available yet)

Note: this seems to work for any word found in the "Colors" and "Cache Server (global)" tab, words found in other tabs are found appropriately