Display problem on mobiles when showing more than 3 posts

hi funesh, i stuck at this issue too..
when related post is set to more than 3 (in my case i set it to show 6 post), the third post get some space, and the forth started as the new line below, did you already solved this problem?

i sent email to automattic for this issue, they give me this fixed, put the code into Custom CSS feature in Jetpack:

@media only screen and (max-width: 640px){

div#jp-relatedposts div.jp-relatedposts-items .jp-relatedposts-post:nth-child(3n+4), div#jp-relatedposts div.jp-relatedposts-items-visual .jp-relatedposts-post:nth-child(3n+4) {
  clear: right;
}

div#jp-relatedposts div.jp-relatedposts-items .jp-relatedposts-post:nth-child(3n+6) {
  clear: right;
}

div#jp-relatedposts div.jp-relatedposts-items .jp-relatedposts-post:nth-child(3) {
  clear: left;
}

}