I just got this error in my chrome console today:
Uncaught TypeError: node.getBoundingClientRect is not a function.
It appears every time I hover an element in the dev tools extension. See attached screenshot.
I am on version 0.14.9 and Chrome is Version 50.0.2661.66 beta-m (64-bit)

I'm having the same problem (React Developer Tools 0.14.9, React 15.0.1, Chrome 49). I think it's related to a change in React 15.0.0. It seems to occur when node is a comment.
It would be fixed by #361.
Right-clicking on the text node and selecting "Scroll to node" from the context menu throws backend.js:396: Uncaught TypeError: node.scrollIntoView is not a function for the same reason (node is a comment node).
Is this then fixed now that #361 is merged?
still a problem
For me, the error seems to only throw when I hover over a Text Node
Same here, only when hovering a text node
Same here on Firefox 50
Hi All,
Any Update on this issue? I am still facing same issue as mentioned.
node.getBoundingClientRect is not a function
Same Here
This was fixed by #361 but we mistakingly shipped an old version to Firefox addons website.
We’ll release an update in a day or two with some new fixes, including this fix.
@gaearon https://github.com/facebook/react-devtools/issues/362#issuecomment-212701157 is not fixed by that PR, as I pointed out in https://github.com/facebook/react-devtools/pull/361#issuecomment-212703004
@Arnavion Yes but it will be fixed by #413
Cool, thanks.
Firefox version was also updated now with a fix (and a bunch of other fixes that mistakingly weren’t deployed for a few months 😄 ).
Most helpful comment
Hi All,
Any Update on this issue? I am still facing same issue as mentioned.
node.getBoundingClientRect is not a function