Drow Ranger Marksmanship challenge in Dota Plus not counting

[FrontierProphet]

Description

Drow Ranger Dota Plus challenge reads:

Deal 2500/5000/7500 damage to enemy Heroes with Marksmanship

Every match the counter will stay at 0 regardless of how much damage is dealt with marksmanship. Happens in every game. Has happened two challenge resets in a row.

Thank you for your time

Example Match ID (and possibly Timestamp)

6707881403

Screenshots