Confluence not honouring the selected macro when macros from different addons have same macro Name

Summary

Macros from different add-ons but with the same macro name override the other, making it unusable.

Environment

• Tested in Confluence 5.10.7
• Tested in Confluence 6.1.1

Steps to Reproduce

1. Install Bob swift - Markdown for Confluence addon.
2. Install Adaptavist script runner addon for confluence.
3. Create a page, try to use Bob swift - Markdown macro, but Confluence will select Adaptavist's markdown macro.
4. Try disabling the Adaptavist's markdown macro here <confluence-server-url>/plugins/servlet/scriptrunner/builtin?section=confluence_macros
5. Still confluence is not able to select Bob swift - Markdown macro, rather tries to search Adaptavist markdown macro and throws an exception.
6. Now disable both Markdown macros and enable Bob swift - Markdown macro only. Now Confluence able to select Bob swift - Markdown macro.

Expected Results

The selected macro will be used

Actual Results

Only one macro is being used even if the other one with the same name is selected

Notes

Steps 4 and 5 does not happen in version 5.10.7 but can be replicated in 6.1.1