an extract from the wikipedia page "Comparison of browser engines", displayed on Librewolf. there is a prominent gap between the letters W and e in the word "WebKit". once you notice this, it becomes apparent that the kerning of ALL the text is slightly off in some very subtle way
https://files.mastodon.social/media_attachments/files/114/097/940/827/457/293/original/59bfe7705fa0c8b4.png