A Última Vez que eu tive a ver com o 4.6 era 18 anos atrás (sim, é como o Notes 4.6 é antigo), mas se bem me lembro, a lista de fontes no 4.6 estava limitada a um número máximo. Acabei de pesquisar no Google e encontrei o limite de 250 fontes que o 4.6 pode exibir.
Em este artigo , há uma explicação para isso, basta colar as informações relevantes aqui:
Notes R4.x uses an 8-bit indexing ID to build a table of available fonts on the system, allowing Notes to index up to 250 fonts. This 250 font indexing limit is a current limitation of Notes. An enhancement request has been submitted to Lotus Quality Engineering to expand the number of fonts Notes is capable of indexing.
Since the font table that Notes builds is highly dependent on the operating system font ID assignments, there is no clear pattern to which fonts will be included in Notes. The current recommendation is to use a Font Manager such as Adobe Type Manager on each machine to partially control the indexing order of fonts. The customer should reduce the number of fonts in the system folder (either Macintosh or Windows) to include only standard fonts. The customer should only use these fonts when designing views in Notes. Additional fonts may be activated by a Font Manager. With this approach, all system fonts will be indexed first, and therefore, any fonts used in a Notes View should be available.