I have some more suggestions:
The abstract is ignoring formating such as center, linebreak and so on. –> Make the abstract format display.
The ability to size the boxes of none Masonry mode.
The ability to remove the links of (individual) or at least all posts of a list. Like this you can create a portfolio without linking further content.
Also: The image overlap error still exists http://web28.milhouse.kundenserver42.de/ChildTheme/wp-content/uploads/2017/01/Issue-Images.jpg
And here is another weird behavior: http://web28.milhouse.kundenserver42.de/seboe/wp-content/uploads/2017/01/Issue-Margin.jpg