Prim drift again...

I've noticed a very annoying, and extremely small, bit of prim drift recently on a house I am building for a client. I'm using the standard 1.23.4 client on a Mac AND the same release on a Win XP system, and see it with both computers.

The house is exactly aligned on the building axis, not oddly angled. The issue only seems to affect one section of the second floor's wall, and half the prims in the roof. I am positive that when I duplicated these sections initially from other parts of the build and rotated them into place, that I rotated them to exact 90 degree or 180 degree differences from their original positions. The numbers were all exact on prim rotation, to three digits - 90.000, etc.

But every once in a while, when I return to the site, I find the Z-rotation on pieces in just these specific sections have all twisted off true by 0.005 or 0.010 degrees. Like a prim that should have a Z-rotation of 90.000 is instead 90.010 or 89.995 degrees. Not even all in the same direction, either. For example, 8 prims might be at 90.005 and three at 89.990.

I carefully highlight each prim and re-enter the Z-rotation to three digits accuracy, and next time I come back, they are off again, the same way!

The prims are not physical, and no one else has mod rights to them.

The rest of the prims in the house are behaving just fine, staying locked exactly on the numbers.

The only common factor I can see for the prims that are affected are that they are all, without exception, prims that I copied from other parts of the building and then rotated the assemblies into position.

When I work on it later today, I guess I will try deleting the offending sections and recopying them from their original sections. *sigh* just gotta love our robust and "predictable experience" in SL...

I had this same problem yesterday with the rotation of a path-cut cube child prim in a link set that was x=180.0, y=0.0 and z=315.0. For some reason, x would go to 180.05, I would change it 180.0 and it would stick for a small time but then go back to 180.05. Even unlinking it, fixing it and relinking it did nothing to solve the problem, so I made a new prim to replace it, and that one worked fine.

I thought they fixed the rotation bug, but I guess it's back.

I`ve been doing a quite large custom build and the last several weeks i`ve noticed the same thing. I chauk it up to lag or server issues. The sim is on mainland but never seems laggy to me.
Lately i`m even seeing the old ,, move it and watch it move back thingy happening.My cure is before i start ,,, i throw a small handfull of salt over my shoulder , give a light dusting of majic dust over the effected area and give praise to the Lindens.

yes yesterday same thing, two identical prims end to end, when I linked them I noticed gaps seams, inspecting them linked they showed a rotation movement 0, 270, 269.05 and 0, 269.05, 269.05. I unlinked to correct them and the reading was 0, 270, 270 for both, relinking and they twisted again. This was at ground level, The build had to be placed elsewhere, so I took it to inventory and rezzed it in place, everything was now as it should be.

I can confirm that this is happening to me too in two different
mainland sims I own land in.

Would everyone who is reading this please take the time to vote
on the 3 related issues listed on the Second Life Jira?

The more votes, the more seriously LL will take this.

If you've noticed it I'm sure you agree that it needs their attention.

It's impossible to make a perfect build if the pieces are rotating
randomly on their own.

Thanks!