Mouse clicks in chat input window

[VenomousFiligree]

This has been a 'bug' that has niggled my for years, but I've never got around to posting.

I enter a line of text that scrolls off the end of the input window. If I then click the mouse at a point in the window, the text moves to some random (?) position and I have to use the arrow keys to get it where I want it, as mouse clicks appear to go everywhere but where I want it to....

[Nickademus]

Can you not hit the End key to go back to where you were typing?

[VenomousFiligree]

I want to go to the middle if the text where I see an error. if I use the mouse I end up chasing the curser all over the place.