`PlotCharacter()` yields an error when the tree is a strict consensus and the character is invariant

[HS6986]

Dear Professor Smith,

I'm trying to reconstruct ancestral states for a strict consensus tree using TreeSearch::PlotCharacter() with this version of TreeSearch. The issue occurred when the character to be plotted was invariant, producing the following error.

Error in nodeStyle["col", , drop = FALSE] : 
  incorrect number of dimensions

This error also occurs when the character consists only of a single state and $?$. When the tree used is a most parsimonious tree, this error does not seem to occur.

I would greatly appreciate it if you could review this issue and fix it.

[ms609]

Thanks for the report – now fixed in the #180 branch

[HS6986]

Thank you!