When looking at a diff of a lexeme where a form's grammatical features have been changed, each grammatical feature addition or deletion has a breadcrumb-like header e.g. "Form / L3-F1 / grammatical feature / 0" that ends with an index **of the diff operation** that has been performed on the grammatical feature list. This is confusing since it looks like it is showing IDs of grammatical features, while not showing the entirety of the grammatical features of the form (i.e. showing a hypothetical second grammatical feature just added as "id" 0).
The following two screenshots show how the indexes are reversed when reversing a previous edit.
{F16099962}
{F16099963}
```
GIVEN I am on a diff page
WHEN a diff of grammatical features on a lexeme is presented
THEN no "grammatical feature" id is shown in the diff "breadcrumb"
```