No change in V 1.6.2 - you can still place a single nether portalblock in the end (and everywhere else) and jump to the nether. And you can still place an end portalblock in the overworld wherever you like and in any quantity 😞
The behavior is not consistent - that's my problem.
If you place TWO nether portalblocks somewhere, they disappear. But if you place only one, it stays. Why do two blocks disappear? Because it should not be possible to build a nether portal manually without a frame and without activation. BUT: you can also walk through a single portalblock. Consequently a single block should disappear too.
Similar with the end portalblock: place it in the Nether or place it in the End - it will disappear (even a single one!) But place it in the Overworld, it stays.
If this inconsequent behavior of block 90 and 119 is a feature, please explain it to me. If it's not a feature, its a bug 😉
I'm not interested any more in this topic and will not update the affected versions.