When tabs on a dashboard panel are changed, the corresponding transaction smushes all the names together:
Description
Description
Revisions and Commits
Revisions and Commits
Related Objects
Related Objects
Event Timeline
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What does "formatted in a strange way" mean? Nothing stands out as incorrect on the page you linked.
Comment Actions
The link is to "RobH changed Tabs from codfw206eqiad207 to codfw206eqiad207esams208ulsfo209." specifically
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Note that those are the actual names of the tabs (not, say, some weird internal hash, as I thought at first glance), the list just isn't getting rendered properly: