[Bug]Starting dtext with uppercase letter brakes it

In category: Site Bug Reports & Feature Requests

Bug overview description.
Starting dtext with uppercase letters, like h4. [sub], makes it not work.

What part(s) of the site page(s) are affected?
Forums and comments I know for a fact but I'm guessing all dtext.

What is the expected behavior?

What actual behavior is given instead?

H4.there is text under this title
[Sub]this is written in 'sub'[/sub]

there is text under this title

this is written in 'sub'

Time of incident (if applicable).

Can you reproduce the bug every time?

What steps did you take to replicate this bug?
See above.

Errors or other messages returned (if any).