source browser displays blank screen when using Edge

I login to BitBucket and I can see the Dashboard just fine but when I then click on a repository, The side menu initially appears and then disappears and the screen is blank.

I checked the console and I can see an error:

TypeError: Unable to get property 'read' of undefined or null reference

uncaught at w TypeError: Unable to get property 'read' of undefined or null reference
at d.get (https://d301sr5gafysq2.cloudfront.net/frontbucket/app.a11c546b61b67428c613.js:22:52170)\\
at Anonymous function (https://d301sr5gafysq2.cloudfront.net/frontbucket/repository.448ae7a3727089e21532.js:1:92170)\\
at value (https://d301sr5gafysq2.cloudfront.net/frontbucket/repository.448ae7a3727089e21532.js:1:92485)\\
at Ci (https://d301sr5gafysq2.cloudfront.net/frontbucket/app.a11c546b61b67428c613.js:205:62195)\\
at Ti (https://d301sr5gafysq2.cloudfront.net/frontbucket/app.a11c546b61b67428c613.js:205:67087)\\
at ca (https://d301sr5gafysq2.cloudfront.net/frontbucket/app.a11c546b61b67428c613.js:205:76665)\\
at la (https://d301sr5gafysq2.cloudfront.net/frontbucket/app.a11c546b61b67428c613.js:205:76975)\\
at Ga (https://d301sr5gafysq2.cloudfront.net/frontbucket/app.a11c546b61b67428c613.js:205:80349)\\
at Ha (https://d301sr5gafysq2.cloudfront.net/frontbucket/app.a11c546b61b67428c613.js:205:80023)\\
at za (https:

Plus on the network tab I get this.
Name Protocol Method Result Content type Received Time Initiator
https://d301sr5gafysq2.cloudfront.net/usr/src/bitbucket/source/adg3/components/navigation.less HTTP/2 GET 404 application/xml 660.5 ms

Works on Chrome fine but not on Edge.
Microsoft Edge 42.17134.1.0
Microsoft EdgeHTML 17.17134

Hope you can reproduce.