The build flow is not correctly shown on IE (Screen shot attached). We have tested on Chrome and is working correctly.
YABV will sadly not support IE, to much work and maintenance. I've tried really hard to get the graphs to look OK in Edge, but there are some issues going on with the svg-scaling. Since Edge is going to use the blink engine in the future, I really don't want to spend more time on this. If someone want to contribute IE/Edge fixes I'll be happy to accept them, but for now I'm closing this issue.