Eclipse problem reporting has weird behaviour when encountering a colon (":")
When a colon character is written on the first line of a file it behaves as expected:

When written on the second line eclipse (or the plugin rather) displays the error Md: No viable alternative for input 'test:' at 2:5 ':' <COLON> in the "Problems" view and the line does not show up in the file outline anymore:
This also happens, when something else is written on the line above.
When written on any line after that it behaves normally again.
This behaviour also occurs when there are 3 consecutive lines and the third one has a colon character in it. The 3 lines can be written anywhere in the file, the behaviour stays the same:
With this variant however I get the following error message for location 7:6:
Md: Extraneous input ':' expecting {<eof>, word, comment, code_beg,
html_block_beg, yaml_block, dot_block, math_block, tex_block,
uml_block, maths, span, url, urltag, html, tex, unicode, entity,
image, fnote, link, table, pipe, hashes, hrule, bullet_mark,
numb…
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