Out Of Memory error (Win64)

2019-03-11 14:10:14: ERROR[Main]: ServerError: AsyncErr: environment_Step: OOM error from mod 'mtimer' in callback environment_Step(): not enough memory
2019-03-11 14:10:14: ERROR[Main]: Current Lua memory usage: 2051 MB
2019-03-11 14:10:14: ERROR[Main]: stack traceback:
2019-03-11 14:10:14: ACTION[Main]: Server: Shutting down

This does not happen under GNU+Linux.

Post Scriptum:
Minetest 5.0.0
Minetest Game 5.0.0
Creative mode
Damage disabled
No other mods