Google appears to be testing a larger three dot menu icon in Search ads on desktop.
The change was spotted in the sponsored results section, where ads displayed a noticeably larger menu icon next to the advertiser URL. The icon allows users to access additional information about an ad and its advertiser.
It remains unclear whether this is an intentional UI test or a display bug, as Google has not officially confirmed the change.
This update was spotted by Sachin Patel.