It's not possible to completely view the diff without this feature. Consider adding it.

I am dyslexic and consider a feature like this to be an essential accessibility need. Please reconsider.

I've added some custom styles for BitBucket Server (tested on v5.8.0) to make similar changes as @chrishemp-lifeomic's custom styles above. Not perfect by any means, but it does the trick for me:

#!css

.text-view .CodeMirror-sizer {
    min-width: initial !important;
}
.content-view .CodeMirror pre {
    white-space: pre-wrap !important;
    overflow-wrap: break-word !important;
}
.CodeMirror-hscrollbar.stash-scroll-fixed {
    display: none !important;
}

what a pity that you aint implement this feature

+1. I love the product, but I hit this issue nearly every day. The reasoning behind the won't fix label here seems weak, and if there are more important issues to fix, then please just make this a lower priority instead of a won't fix. Thanks!

+1 this would be very helpful when working on smaller displays like laptops

Also agree. +1 on this much-needed feature.

BitBucket never implement any changes, suggested by their customers. Still unable to view the right hand side navigation on iOS Safari 9, despite nearly 12 months of pleading with them. I am surprised this company are still in business. And yes, wordwrap would be a brilliant feature!

Very disappointed by the official response to this.