Problem with Neof. Seiounishiki

[Shoreguy]

Have had plant for several years. Growth in foreground has produced perfect Genpei leaves (half green, half yellow) throughout until it formed a leaf with only thin green margin, followed by a ghost leaf with suffusion of green.

Is the growth doomed with this behavior, or can it snap out of it? The plant has two other smaller growths in back, a small Genpei, and a ghost sandwiched between.