When posting bugs in the forums it will help prevent confusion if we follow a standard format. We want to fix all of the bugs that you are experiencing so you can go back to having fun but it can be difficult to know what to do if we don't understand exactly what the problem is.
Each bug should have the following sections.
This is where you describe the bug that is happening in the game right now. You should include any details that seem relevant like the frequency the bug happens, anything out of the ordinary that might have caused it, or if you were able to reproduce the result.
Make a numbered list of the steps that caused this bug to occur.
Describe exactly what happens.
Describe how the behavior should be different from the behavior you described. Be clear if you know the behavior is incorrect or if it just seems suspicious.
Primary sources for this should be www.playdota.com and tests with the latest version of wc3 dota
(a testmap allows you to play several heroes yourself for testing purposes: How to validate WC3 Dota behaviour).
Try to avoid using other sources (such as dota2wiki.com, other wikis or hero guides). Those sources are often outdated or mistaken. If you rely on those uncertain sources nevertheless, make sure to mention it in your report.
Here is an example bug written in this format.
Nevermore's ultimate does less damage then it should at close range. It appears to be fine at long range.
1) Level up nevermore to at least level 6. 7 might be better so you can get max level Necromastery
2) Collect souls up to your maximum so you can shoot your ulti at full strength.
3) Get right up next to an enemy (I used the invis sword)
4) Cast your ultimate
The target next to you will take damage like they were only hit with one or two of the lines sent out by the ultimate.
Units really close to nevermore should be hit several times. I'd say closer to 6 or 7.
Let me know if you have any questions.