Not sure this is the best forum/category but :

I'm using the Bootstrap.dialog in a couple of places in an angular app.

Suddenly Chrome (which I think was updated recently ? - I'm on v 39.0.2171.71 m) is not showing the dialog box correctly.

Normally the background page is 'dimmed' and you can interact with the dialog.
Now the dialog itself is dimmed and not responding to any click event.
No exceptions in console.

Firefox and IE are both OK - only Chrome (and Chrome Canary) seem to be affected. Problem exists on Desktop, Tablet and Phone devices.
To b e fair, I also updated some of the angular & boorstrap files recently but.....

Anyone else seeing this behaviour. Any suggestions ?