If this is to misleading, the <> can be taken off the template.
But in the end, whatever you put in there, will be marked up by gitlab. So leading spaces, leading #, ''' and various others all translate into markup.
Also, the template is meant as a guideline, so important bits are not forgotten.
E.g.
## What happens
<Please fill in>
## What did you expect
<Please fill in>
If you write "foo bar CRASHES", then it is ok to leave the "what did you expect" empty or even remove it.
The reason the section is there, is that it is not always obvious.
Like if you said "bar.foo shows a red square", we might not know what you expect: show nothing, a red circle, a blue square, two red squares ...
You may think it is obvious, but spelling it out can save the extra round of getting feedback.
So it depends on how universally obvious it really is.
In the same sense, if you report that the word "objecd" is misspelled in some comment in the source => well your OS really does not matter.
