Black Mesa Bug on Steam

while playing black mesa on steam , When i enter into another chapter , it shows another thing instead of chapter name. For chapter blast pit it shows :

[tt]#BMS_Chapter6_Title[/tt]

and when saving game . it shows :

[tt]#BMS_Saved[/tt]

What is the bug ?

Just in case , my black mesa version is not illegal !

Oh , mistakenly posted in wrong part of forum !

Dear admin , please move the post to the right part…

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.