The fix for Bug 63955l introduced regressions. Armin Le Grand from bug 63955, comment #18 said:

"Why was this fixed *in the primitive creation* ? Primitive creation should always represent the 'truth' about the geometry. If decomposition takes too long, the fix should be where it gets decomposed. Each decomposition implementation at the primitive level *has* ViewInformation exactly for that purpose (!)
Did I mention that for dashed lines when *clipping* against *something* the dash *will move* and not be the same as when started from the line's start?

The fix also does not prevent a 18km long line be fed to rendering from other sources, only one source is eliminated. That's why it should be fixed where it gets visualized/discretized."

The regressions were worked around in Bug 120350 with a note suggesting to perform clipping elsewhere: 
https://cgit.freedesktop.org/libreoffice/core/commit/?id=1dccd6814f1f