When a tech's primary (controlling) cab is re-oriented to a different plane to that of the tech's initial build orientation, a number of issues currently become apparent: (1) Speedometer is wrong - specifically when a tech is grounded (on wheels/hovers), it measures only the component of velocity in the original frame of reference's forwards/backwards. So, if cab (and wheel base) was tipped back 90 degrees, it will read out almost nothing, even at high speed. Flying is OK. (2) Anchor button will flip tech back into original build orientation - ignoring current pose, primary cab, wheels and the anchors themselves. (This 'feature' was very handy for the attached car-plane tech, which can flip-back anchor to launch vertically.) [Changed in 0.7.8.9 - new bug, see below.] (3) Build beam message - "Use to turn your tech upright." shows constantly, while blatantly driving around just fine. Shows while anchored back in original orientation (since cab is then flipped). [Edited 2017-10-12] (4) Build beam rotation - remains fixed to initial orientation, despite build beam itself holding the tech upright by cab orientation. So it can pitch/tilt the tech instead - as shown (in video) in this existing bug thread. (5) AI (friend and enemy) hate it - they can't drive because the build beam picks them up and holds them forever. And when anchored in initial orientation they just spin continuously on the spot (if the cab is pointed at the sky or ground). (6) Missing Block orientations - The accidentally missing rotations from blocks, and the rotations excluded deliberately from many (not all) of the crafting blocks all alight to the initial frame of reference. Listed in this other bug report thread. Potentially very confusing if a new player has managed to re-orient their main cab (as I did myself first time through): making it impossible to lay refineries/fabricators/etc flat. (Although they mostly need to be part of an anchored base tech anyway.) If fixing this to cab orientation, that might be one (cumbersome) way to allow advanced builders to have truly 3D crafting bases (by tipping the tech with cab re-orientation), while allowing blocks already placed to be rolled. (But messy and frustrating for editing builds; I'd prefer a toggle option or dedicated block for this.) (7) Sole Primary Cab can not be re-oriented away from initial frame ([F] and [G] locked out) - but then a sole cab can't be re-oriented from any other orientation either (so not strictly a part of this list). @higekun described this as a bug already (as with some of the above, too): Most of these problems can be demonstrated by the attached tech. This was previously shown in Community Core, and should be un-added to the enemy population (it was just meant as a concept demo tech), unless the AI control orientation bugs (above) are to be fixed soon. [/B] Edit: (8) Mini-map/radar direction arrow, my point backwards, if cab was reversed, etc.