Front page blog problems after 3rd post

[INSACIOUS]

Hi there, fantastic theme, love its layout but I'm having a rather strange issue.

I haven't really modified any code, just some minor css hiding stuff so not sure why my homepage http://insacious.com is showing nicely the 3 latest posts with featured image with title and linking to the post, however when a fourth one is added it shows but no link, no title and a strange icon on bottom right (see JPG below.)

Any clues?
https://ibb.co/je1Pvv

[INSACIOUS]

FYI, this is the css I've added.

`/*
You can add your own CSS here.

Click the help icon above to learn more.
*/

.site-footer{
border-top: none;
}
.site-footer-widget__title {
color: #fff;
}
.site-footer-widget {
color: #fff;
}
.site-info {
color: #d3d3d3;
}

.search-submit {
border-color: #fff;
}
input::-webkit-input-placeholder { color: #d3d3d3;
}

.main-navigation {
color: #fff;
font-size: 12px;

}
.p3 {
font-size: 13px;
}
.post-content {
font-size: 13px;
}

.post-box__intro h1:nth-child(2) {
display: none;
}

.site-footer-widgets {
background-color: black;
}
.share-post {
display: none;
}
.page-template-default .site-footer{
background: none;
}
.corporate {
font-size: 12px;
text-align: center;
}
.corporate2 {
font-size: 13px;
text-align: center;
}
.site-footer-widgets {
font-size: 11px;
}
`

[INSACIOUS]

anyone?

[INSACIOUS]

pfff