In the attached screenshot you can see the blue build time progress bar. The problem is that the finished part of the progress bar is blue, while the unfinished part of the bar is white. But white is also the color of the website background! Therefore it is currently not possible to know the total length of the progress bar, which in turn makes it not possible to know how much per cent of the build time is already finished.

For example, the blue progress in the screenshot is consistent with the build time being finished to 50%. But since the toal progres bar is actually quite short, the real progress here is something like 90%.

Solution: Simply make the unfinished (right) part of the progress bar some other color than white. e.g. light grey. Then it is clear how long the progress bar is in total, and consequently how much of the build time is finished.