Things I dislike about 1.23 RC1:
1. Attachment pie menu: kind of annoying how what once took one click now takes two. much has been said on this topic, I don't need to reiterate, just vote please.
https://jira.secondlife.com/browse/VWR-12946this pie menu also applies to HUDs which makes little sense. For many people this does not improve the experience, it makes it more tedious. Fear of accidental nudity? do it once and you'll learn how not let that happen ever again and you'll have something funny to tell at parties. then again SL is not for everyone

2. Edit window: Less/More button is gone. I miss you. please come back.

It was really nice to click you instead of moving the window out of the way when it blocked my cursor from selecting an object. and the prim count line has moved and looks smaller. why? hey why not!!?! Hey why not just put the Menu bar at the bottom and the buttons at the top?!!? Just because!! woohoo!! hahahaa it took years to get Release Keys moved to a menu, so let's not make this a big deal and just put it back before some one gets even more RSI.
3. Inventory Window: icons are slow to load, i see grey squares until icons load each time i open the window. also saw this on the land window, the preferences window. button icons not caching? never seen that before.
4. Communicate window: Bold font on the friends online list is extremely BOLD now, almost painful to look at. does it have to be so bold? have you seen how bold the bold is on the bold font of the friends list... i think you get my point. we don't really need the text to pop out and stab us in the eyes, just make it a little more readable.
5. Camera View Angle. I find this new control completely useless. Zoom In with ctrl-0, Zoom out with ctrl-8 or using a mouse scroll wheel are a MUCH better methods that perform this function.
6. my favorite camera controls are gone. transition time and smoothing. i will miss you two. dearly. follow distance only seemed to work while flying before, now that it actually works while walking a numeric value would be nice.
7. some textures are slow to load, especially trees and other alphas, textures go grey again and have to reload if they come into view again after fully rezzing. Same problem Lalo and Feral have reported.
8. Alpha textures are not layered properly, hair and eyelashes don't look right together. yesterday my avatar had some interesting "alpha holes" in the torso after changing a shirt, i rebaked textures which then turned my avatar solid black. so i relogged thinking that would solve my problem. Nope! i was ruthed/cloud for an audience of 50 while performing a live concert because the viewer wouldn't let me edit appearance. thanks! lol! Sometimes I think I can see right through myself...
9. had some trouble copying and pasting slurls from the main map. one button does this function and it failed.
10. Statistics window font is larger than rest of the UI fonts, too large.
11. That new default Profile/Landmark pic texture, the question mark texture that pops up before profile and landmark pics load. ick. I'd rather see nothing at all. lol
12. Web tab on Profile Window still has silver skin scroll bars while using dark skin for the UI. STILL. Ever since that horrible skin was introduced it has left its icky grey-blue stain on the dark skin, hiding in the corners of the beautiful and exotic dark skinned viewer, bits and pieces of it that should have been cleansed but were forgotten about over the cycles... I know, i'm really nitpicking now but I seriously can't stand that color. In fact i wish the forum page was darker because its starting to remind me of that skin.... Seriously though can the dark skin be consistent please? thx.
Things I actually like about 1.23 RC1:
1. Statistics window sticks!! yay! finally! it remembers where i put it after relogging. joy.

oh but that font is still to big. dang it. :-\
2. SL Voice does not crash. good work to who ever is responsible for all that! I cannot make this claim regarding 1.22 so this is a time for celebration. yay!
3. Set Default Permissions for uploads is very nice. thank you very much for that.
4. View>Banlines is cool, will be nice for machinima and photography.
5. World>Stop Animating My Avatar... thanks for clearing that up!! was it really that confusing before? lol
In spite of the flaws 1.23 seems like a stable viewer with fewer crashes especially with SL voice. If it weren't for all the stuff that was changed for no good reason, like fonts and camera controls and textures and pie menus, this would be a great RC. as for shadows,it worked on windows but not OSX. my Macbook Pro didn't much care for setting FBO to true. It would much rather freeze up than try to produce any kind of realistic shadow effects. kristenlee's shadow viewer worked much better.
/me goes back to 1.22... waits for 1.23 RC2