Leaves deformed

[Ron]

I have two Scadoxus multiflorus

ssp. katharinae that I have been growing for several years.  This year, the new growth on one is abnormal, see the green bulges in the attached photos.  The other one looks normal.  Any idea what this could be?

[CG100]

There are several possibilities, although it might be none of the "obvious" ones.

Thrip (or other tiny insect) damage within the bud is possible. Virus is another possibility, as it sudden temperature variation.

[Ron]

Because of the possibility of a virus, I will isolate the plant and keep an eye on it.