hello, i wanted to work on this bug, please explain it further for the starting pointers, thanks

I agree. These needs steps (or links to documentation) how to see the "inspector" and what "context item" refers to here so a contributor could pick this up. @Esanders?

In VisualEditor:

• A context menu is the small popup displayed when you place cursor on something with additional properties, like a link. Context item is a single entry in that popup (there can be more than one in some cases).
  
• An inspector is the bigger popup displayed when you click "Edit" in the small popup. It lets you modify the properties of the highlighted thing and sometimes provides additional action buttons.
  

Change 196853 had a related patch set uploaded (by Rits):
T90896 Changed CSS of Context menu Edit button and inspector's Done button by adding a margin-right of 0.625em

https://gerrit.wikimedia.org/r/196853

Change 196853 had a related patch set uploaded (by Rits):
Fixed styling inconsistencies between context item and inspector

https://gerrit.wikimedia.org/r/196853

Change 196853 abandoned by Bartosz Dziewoński:
Fixed styling inconsistencies between context item and inspector

Reason:
(Patch apparently forgotten by uploader, and a more complete fix is on our roadmap.)

https://gerrit.wikimedia.org/r/196853