I opened Targum Onqelos. Using the feature “Multiple Resources”, I intended to have on my screen three of the targums to the Pentateuch and the corresponding volumes of the Aramaic Bible displayed. For the Genesis and Deuteronomy, it works well, as you can see below:
But it doesn't work equally well for the other books of the Pentateuch. The reason is simple: The volumes 2, 3 and 4 contain the translations of two targums: Neofiti and Pseudo-Jonathan. Because of that, if you navigate to the Exodus, Leviticus, or Numbers, you can only see 5 taps, as it is shown below:

As you can see on the screenshot above, for the Leviticus, the translation of Targum Pseudo-Jonathan is not displayed. The solution would be to break the volumes 2, 3, and 4 of “The Aramaic Bible” in two.