I have normalized 256 floating point vectors for which PCA and TSNE return 2d vectors with only NaN values. Using default parameters. No difference whether I pass a list of a few or hundreds of vectors.
The same vectors work fine using UMAP and return "good" 2d results.
No errors in the logs.
Version 0.6.0.
(Similarly, for FASTMAP I only get 0 values.)