Coloring on page version comparison is incorrect

Summary

When comparing two different version of pages in Confluences, the 'blue', 'green' and 'red' colouring described here is no longer working.

Steps to Reproduce

1. Create a page
2. Edit it (make a change and save it)
3. Compare the two versions

Expected Results

The change is mark with blue, green or red, depending on the type of the change.

Actual Results

The issue is not coloured as it should. It has a strikethrough if it is removed though.

We can see this in the browser's JavaScript console:

Failed to run init function: TypeError: Cannot read property 'text' of undefined

Workaround

None