Thanks for reporting these Ron_Stard. My best guesses for each:
Lemming trapped in "Scaling the heights" (Oh No! More Lemmings!)
This one's quite a common glitch that happens in a lot of early versions of
Lemmings. Assigning a Climber to a stuck lemming can free them, as can using a destructive skill, of course.
I'm not sure this one's a bug - I'm guessing Tsyu has purposely left this in as a glitch as it's part of Amiga physics, and I'm fairly sure that SuperLemmini models Amiga physics quite closely. I could be wrong about this, though.
Climber that crosses through bridge in "Have a nice day"
If the builder bridge is started on the
very edge such that the pixels only just overlap, Climbers are able to climb through it. Again, this is something that happens in Amiga Lemmings as well. See
this video of my playthrough of
Postcard From Lemmingland - I cancelled the attempt due to this happening (link is at the correct point in the video).
Again, this is possibly something that has been left in purposefully (but maybe not).
Blocker that doesn't block on (descending to the left) steep path in "Valley Of Fire"
This one's definitely not a bug. Blockers have two trigger areas (one for each hand), with a gap in between where the Blocker's body is:
The example you've given is quite normal, and happens particularly on steep slopes when one of the Blocker's trigger areas is
past the edge of the sloping terrain: the lemmings can walk over and through the Blocker the same as when they fall through a Blocker from directly above:
Note that the Blocker's right-side trigger is past the edge of the terrain, and so will have no effect on the lemming walking down the slops. The left trigger, however, connects with the slope and so will stop lemmings walking up the slope.
Builder that doesn't build at the very (left) edge on "Up, Down or Round and Round" (it's possible to build a bridge one step beyond when facing right, as seen on the replay)
After testing, I can confirm that this happens on the Amiga as well, and also in WinLemm: left-facing builders overlap an edge by at least 2px, whereas right-facing builders can overlap by just 1px.
It'll depend on whether or not Tsyu has purposefully left the first two in as faithful recreations of Amiga physics as to whether or not these things get fixed, and the third is, in fact, standard Lemmings physics.
Hope this helps.