Active click area around clear history button on chat swipe from left too small

[Jonathan Cave]

Version: 1.1.2.95

Steps to reproduce:
 - Open main chat history window
 - Pick a chat and swipe from left to right
 - The red action buttons are revealed
 - Try clicking the right hand clear button a number of times

Expected result:
 - pretty much all the right hand side of the red area should correspond to the clear action

Actual result:
 - the active region for the button is surprisingly small - very close to the icon image itself