Unused label still appearing in label dropdown filter

[e-macias-bb]

Hello,

We are experiencing an issue where deleted labels are still appearing in the Label Search Filter.

For context, we use labels to categorize our pull requests. These labels are very easy to create but near impossible to remove. According to the documentation, those labels will disappear once we manually remove it from all the PRs that's labeled with it. However, we are still seeing these labels for which no PR with the label exists.

i.e.
Deleted Label: “v96”, “v100”

Expected Results:
Labels are no longer appearing in Drop-down filter

Actual Results:
Labels are still present (see attached screen shots).

Will you be able to help us determine why these labels are still present? Furthermore, is there an easier way for us to bulk remove it without having to go one by one?

Below are screenshots to hopefully help illustrate the issue we are seeing.

1. Drop down showing labels "v96" and "V100", however, no open PRs with those labels.
   
2. No PRs found for "v100"
   
3. No PRs found for "v96"
   

Current versions:

Bitbucket: v6.10.0
Pull Request Labels by Reconquest: v7.1.0