I saw you cant look trough ice if you have it in your inventory or in your hand. This is a kinda anoying with some texturepacks and for some people π
Edit: You can't Look Trough Stained Glass too, if you have it in your hand (thanks to zombie hunter)
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I deleted my previous comment, because i'm not sure what's the reporter really talking about.

Confirmed.

Can anyone please add Stained Glass to the description/title of this ticket and update the affects versions list to 13w41b ?
Edited π
The Glass "placed" & in Creative Inventory Added (Works 2 in hand, Tested)
Tested in snapshot 13w42a, and it is fixed π

I still can't look trough ice in 13w42a

Not fixed for original issue "Opaque Ice".
Fixed for hitchhiked issue "Opaque stained glass"
In inventory: 'fixed'
In Hand: 'fixed' for stained glass 'not fixed' for ice
Confirmed for 1.7.2