html - page jumps with <a href> adding websites randomly to links -

i'm trying make page jumps on page in blogger, using:

<a href="#test">test</a> 

for source and

<a name="test"></a> 

for target.

and fine , dandy except when switch html mode compose mode...and html mode. when happens triggers above lines of sudden turn in these 2 lines:

 <a href="https://www.blogger.com/blogger.g?blogid=6870619294109194114#test">test</a>   <a href="https://www.blogger.com/null" name="test"></a> 

where blogid site login blogger.com , null site gives error message.

it's quite annoying and, while manually delete these added web addresses each time, hoping out there has solution stop happening have lot of jumps , updating page.

does know why addition happens , how stop it?!

actually problem occurs because link https://www.blogger.com/null generated automatically , cause re-routing of error page. solve problem, enter html tab post , link , remove code, publish post in html tab. , should not return compose tab avoid automatic generation of link again. can see demo