### Summary When clicking the button `Hide whitespace changes` on the changes tab of a (specific) merge request, not all whitespace changes are hidden. ### Steps to reproduce 1. Add and commit this a file called `TESTFILE` with the following contents into a repository: ``` Leading whitespace with tab 1 Leading whitespace with space 2 Trailing whitespace with tab 3 Trailing whitespace with space 4 ``` 2. Make a new branch. Eg. `whitespace-test` 3. Replace `TESTFILE` with the following contents (Note the leading/trailing whitespace changes as well): ``` Leading whitespace with tab 1 Leading whitespace with space 2 Trailing whitespace with tab 3 Trailing whitespace with space 4 ``` 4. Create a new MR from this branch. 5. Look at the diff with `Show Whitespace changes` both on and off, observe that whitespace changes with leading whitespace are always displayed. ### Expected behavior No whitespace changes are displayed. ### Actual behavior Some whitespace changes are still displayed. ### Screenshot `Show whitespace changes` enabled:  `Show whitespace changes` disabled:  ### Proposed empty state design See designs attached to original issue that was promoted: https://gitlab.com/gitlab-org/gitlab/-/issues/16308/