Bamboo Label variable values are not resolved when a regex is used

Problem

Bamboo Label values are not resolved and replaced when a regex is used.

Environment

8.1+ 9+

Steps to Reproduce

1. Create a Build plan with a variable inject task in a job
2. Add a script task that would write something to the log file eg: " Testing something"
3. Add some labels and custom regex in the job eg: 'Test*'
4. Run the build plan 
5. Check the Build Summary page

Expected Results

Label variable values were replaced correctly

Actual Results

Build summary labels were unresolved shown below.

InjectVar1=${bamboo.inject.var1} 

Workaround 1

Remove the Regex for the job from 'Pattern Match Labelling' section.

Notes