Font Creator 15 Red Circle

[Nebuldu]

Hi!
When creating the condensed and expanded styles of the font, a red error sign appears in the images for glyphs such as Aogonek and aogonek. What does the letter T next to the sign mean? This error only appears with some glyphs.

[Erwin Denissen]

As you can also see in the Validation panel, the specific glyph layers contain transformed components. This is not a real issue, however as the specification does not allow mixed transformations, such glyphs will be decomposed.

The specific letters that relate to interpolation issues are:

O -> Outlines
M -> OutlineContourMismatch or OutlineComponentMismatch
F -> OutlineContourFlavour (layers contain mixed quadratic and cubic contours)
N -> OutlineNodeType (mismatch in On and Off curve nodes)
D -> OutlineContourDirection
S -> OutlineContourStart
W -> OutlineContourSwapped or OutlineComponentSwapped
T -> OutlineGlyphMatrix (Scaling, Rotation, Skewing)
A -> Anchors

[Nebuldu]

Thank you.