Clicking the "<>" code button while composing comment on an issue scrolls the page and does not insert code tags

Running Safari on Mavericks.

BUG 1:

I noticed that lately, the code button doesn't seem to work in certain circumstances, which I have worked out to be:

1. When text in the text area takes up more lines than are visible
2. Then the page is not scrolled to the bottom

If both of those cases are true, the code button does not insert the code wrapping tags and scrolls the page to the bottom.

Bug 2:

Clicking cancel when asked what type of code tags to insert, inserts the tags anyway.

I have created a screen recording of these behaviors:

https://dl.dropboxusercontent.com/u/87939936/BUGS/bb-code-button-bugs.mov