🎉 Node-RED 1.0.0-beta.4 released

Not certain if this is my setup or an issue but I was having a problem on beta3 with selecting nodes in the editor. Looking in devtools i see TypeError: Cannot read property '_focusTabbable' of undefined in vendor.js. So assuming this was a beta3 issue I have updated to beta4 - but I got the same issue.

node -v 
v10.15.3

This may be somehow related to something I am working on (a contrib node @BartButenaers & I are working on) though i'm not sure how.

What I experience...
At first, loading NR into browser, all is fine. I can open nodes editor, I can move, deselect, re-select, deploy etc. Then, If I add a node via CTRL+Left Mouse Click, nothing is selectable, I cant open the nodes editor and the above error occurs in Devtools clicking any node or any area of the canvas.

UPDATE...
I have tried to recreate the issue using above steps - but it is not occurring now.
I have changed nothing bar perform a single deploy since I was having this issue.