Due to the change[1] to arrow-down.png recently, the inspector icon was broken. The padding inside the image is very specific for the drop-down menu. The inspector-triggering icon however, does not need this padding and is mis-aligned as a result of that.

[1] Change: Ib09a2a20b1 | https://gerrit.wikimedia.org/r/16218

Version: unspecified
Severity: normal