This is the class that limit the content :
Less:
.blockMessage--limited {
max-height: 100px;
max-height: 25vh;
overflow: auto;
-webkit-overflow-scrolling: touch;
}
You can adjust this contrait by adding this in your
extra.less
template i guess. Set the height as you wish.
Less:
.blockMessage--limited {
max-height: 400px;
max-height: 100vh;
}