Absolutely love this extension but didn't find a way to toggle this behaviour off.
Steps to Reproduce:

@ShashankaNataraj you can turn it off by setting "gitlens.blame.annotation.activeLine": "off". Hope that helps.
@eamodio Thanks! That worked! But can it be activated through the omnibox?
@ShashankaNataraj currently no -- you can toggle the whole-file blame on and off, but not just for the current line
I would just like to say I experienced this also, I think many users will be confused like we were, please consider adding a toggle for active line.
@ShashankaNataraj @CoenraadS FYI, the latest GitLens v4.0-alpha is available and adds a command to toggle the current line annotation on and off. Check it out. Please follow these instructions to install a pre-release
@eamodio You must be the most responsive open source dev out there! You are awesome!
I toggled off this feature adding this line to settings.json聽
"gitlens.currentLine.enabled": false
I am still working on getting Visual Studio and Android Studio to work properly. It looks like new computer time. Please be patient with me. Thanks guys.
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Most helpful comment
I toggled off this feature adding this line to settings.json聽
"gitlens.currentLine.enabled": false