JDownloader contains of two update repositories.:
JDownloader.jar (JDU) and the rest (JD)
The installer requests a package from 0 (none) to current head revision for the used environment (os, bitness, cpu..)
For each package and in case they are not ready yet, then it has to wait (first bar) for them.
After package is finished, it will download and install them (next bar).
With ready packages available, the first step is finished fast and thus the first bar is not visible at all or or only for short moment.
-psp-
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