When you create a new operator (VEX/Python) you expect to see automatically created template code. But sometimes (actually behaviour depends on build and OS) Houdini just show you an empty code section. ops:

… or even the last opened operator code section!

(If I open, for code inspection, VEX GI Light shader and then create new shader via File->New Operator, first thing I see is a VEX GI shader code inside my new operator definition, not always, just from time to time.)

One related note:
wonderful RFE would be: empty shader definition in VEX, so I wouldn't have to create new operator with menu File every time I want code something. Just:
Tab-> Vex Surface Empty Shader -> Edit. Like VOPs but in VEX code. It could be saved by default in OPCustom.otl… I prefer to work with code and using long path “menu File -> New op.” approach every time I want check something is little annoying. I could use Cutter or other tool like that I know but I would prefer to stay in Houdini. As I remember there is something like that in Sops, right?

SYmek
… or even the last opened operator code section!

(If I open, for code inspection, VEX GI Light shader and then create new shader via File->New Operator, first thing I see is a VEX GI shader code inside my new operator definition, not always, just from time to time.)

Yes, I've seen this too. Looks weird