[Bug]: DoLookahead modifies extrusion move followed by z move

[gloomyandy]

Possible problem identified in RRF 3.5.1 and this report created as requested by DC42

While investigating another issue I noticed that the following code:
G1 E-2 F200
G1 Z200 F1000

Results in DoLookahead modifying the end speed of the extrusion move from zero to allow the Z move to start at a higher speed. This is probably not correct as the two moves are in effect not related. The following code results in the moves operating as expected:
G1 E-2 F200
M400
G1 Z200 F1000

[github-actions]

This issue has been automatically closed because it does not originate from a Duet3D administrator.
Please create a discussion on https://forum.duet3d.com first and fill out the corresponding GitHub template if the bug or feature request is acknowledged.

[dc42]

Implemented a fix in 3.5-dev, needs testing.

[dc42]

Confirmed fixed by Andy S.