Formatting is lost with console errors:

โ remove-diff-signs
content.js:1725
TypeError: Cannot read property 'textContent' of null
at removeDiffSigns (content.js:2800)
at MutationObserver.removeDiffSignsAndWatchExpansions (content.js:2818)
at simplified_element_observer (content.js:1633)
at remove_diff_signs (content.js:2829)
at enableFeature (content.js:1721)
enableFeature @ content.js:1725
async function (async)
enableFeature @ content.js:1710
ajaxedPagesHandler @ content.js:4066
safeOnAjaxedPages @ content.js:4038
github_injection_default @ content.js:1706
gitHubInjection @ content.js:362
safeOnAjaxedPages @ content.js:1704
onDomReady @ content.js:4037
async function (async)
onDomReady @ content.js:4016
init @ content.js:4014
async function (async)
init @ content.js:3977
(anonymous) @ content.js:4146
__webpack_require__ @ content.js:12
(anonymous) @ content.js:64
(anonymous) @ content.js:65
content.js:2800
Uncaught TypeError: Cannot read property 'textContent' of null
at removeDiffSigns (content.js:2800)
at MutationObserver.removeDiffSignsAndWatchExpansions (content.js:2818)
removeDiffSigns @ content.js:2800
removeDiffSignsAndWatchExpansions @ content.js:2818
childList (async)
removeSelectableWhiteSpaceFromDiffs @ content.js:2811
removeDiffSignsAndWatchExpansions @ content.js:2817
simplified_element_observer @ content.js:1633
remove_diff_signs @ content.js:2829
enableFeature @ content.js:1721
async function (async)
enableFeature @ content.js:1710
ajaxedPagesHandler @ content.js:4066
safeOnAjaxedPages @ content.js:4038
github_injection_default @ content.js:1706
gitHubInjection @ content.js:362
safeOnAjaxedPages @ content.js:1704
onDomReady @ content.js:4037
async function (async)
onDomReady @ content.js:4016
init @ content.js:4014
async function (async)
init @ content.js:3977
(anonymous) @ content.js:4146
__webpack_require__ @ content.js:12
(anonymous) @ content.js:64
(anonymous) @ content.js:65
See https://github.com/sindresorhus/refined-github/issues/1444 and especially this comment: https://github.com/sindresorhus/refined-github/issues/1444#issuecomment-408274280
Thanks! Disabling remove-diff-signs fixed the issue.
Ah. Also, dealing with this:

Fixed by #1451
Most helpful comment
Thanks! Disabling
remove-diff-signsfixed the issue.