Building Tool Bugs and Transparency problems

I was wondering if anyone else was having problems with building tools in game after the last update? I for one have issues with prims that I am creating disappearing on me after I have created them to have them come back into sight a few minutes later thus making the building process like "waiting for paint to dry." I can copy a wall drag it over then it vanishes to appear minutes later after I have successfully copied the wall again on second attempt, its very frustrating. Bug number two is that I am having problems with the shoes that I have already made that were perfect before update now have color distortion in the areas that I have my invisibility prims placed. Before update if I had a sphere that was textured to be shinny and looked very metallic looks very opaque and not the way it should be. I have tried to retexture to just reset it but the problem seems to be in the rendering on the image not the texture itself, has anyone else encountered this when building with invisibility prims or the first bug I mentioned?

Your first bug has been posted on a million times. Everyone is having that problem. Allegedly the last patch was suppose to fix it but for me it didn't and clearly didn't for you either.

I don't have an answer to your second bug.

The biggest annoyance building bug I've noticed recently is that if you try to hollow an object out that's had half of it removed via the cutaway option (ack, can't remember what it's called off hand), for some reason the taper settings get out of whack and you have to put them back to their default values. If I leave the object hole and hollow, no problems, it's just when I try to hollow it out after I cut some of it away that the taper settings get whacked out.

E