Looks like you have the "extend secondary beams over rests" option selected. Unfortunately, there isn't a way to adjust the broken-beam lengths intelligently when this option is in effect.

You can get “primary beam over rest” via a workaround.

Unfortunately the workaround is time consuming.

To speed up a bit, do one measure, and copy that measure to the other measures.

Then adjust the pitches with the Repitch Tool.

Here comes the workaround:

Hide the sixteenth rest.

This step will shorten the secondary beam to “normal” beam stub length.

Use the Speedy Entry Tool feature {Voice 1 / Voice 2} to add a sixteenth rest in Voice 2.

Your example does not show “secondary beam over rests”.

If you need a solution for “secondary beam over rests”, let me know.