Filter with '-' and spaces in between them are not searchable in Pie Chart macro

Step to Replicate

1. Create a filter in JIRA with the following name test - filter. Observed there are spaces in between the '-'.
2. Create a new page in Confluence
3. Add the Pie Chart macro in Confluence
4. Try to find the filter in the 'Preview'

Expected Result

The filter with test - filter is display in the search box suggestion

Observed Result

The filter are not displayed in the suggestion box.

Extra note

This issue is not reproducible in Confluence 5.7.x