I've gone thru and tested these bugs on beta 25,
I hope it's handy to have them listed in one place.

Animation Frame Zero
--------------------
When using animation the numbering of the first frame filename is
forced to 1 when starting at frame 0.
+kfi0 +kff2 +ki0 +kf2 +fn
results in two frames 1 and 2, not three frames 0, 1, and 2.

Facets Pattern Error
--------------------
Using facets as a controlling pattern for a normal map results in an
unspecified error. This should be caught at parse time to
give a specific error. Existed 3.6 as well.

Malformed Nested #declare Doesn't Raise Error
---------------------------------------------
A declare of the form...
#declare Weird = #declare Aval = 1;
parses without an error. This is probably should raise an error,
or at least a warning, since it can terminate inside nested
#if and #while statements. Existed in 3.6 as well.

Partial Transparency Blocky Artifacts
-------------------------------------
When looking thru a partially transparent object, there can
be block edged light spots, and raster lines (about 32x32 pixels).

Partial Transparency Shadow Issue
---------------------------------
Shadows of overlapping objects, with partially transparent textures,
can have speckled shadows, probably due to coincident intersections.

Reflective Texture Maps Abrupt Exit
-----------------------------------
Texture maps containing reflective textures can cause a crash.

Transform Block Misaligns Texture in Union
-----------------------------------------
Use of transform {} may misalign textures in unioned objects.

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