Creole test case issues: strong line, underline and underline with var. issues

Question

Hello PlantUML team,

We had made some Creole test case, and discover some issues:

• strong line not working (with '____' test)
• word not underlined (__underlined__ test)
• underlined with var. issue (__$id__ test)

Here is the sum-up:

Here are some example:

Legend or title, seq, usecase or deployement:

Thanks for your update,
Regards,
Th.