Ultimaker Nozzle Oozing before leveling and after

[RogueWave 15]

A few seconds before bed leveling operation starts, significant amout of oozing prevents the level operation to be completed. Have to clean off the oozed from the nozzle, then things are fine

 

After bed level has finish, just before the actual print operation starts, print head is moving to fisrt layer to be printed, oozing from the nozzle again.....

 

To summerize, oozing starts just before bed leveling and just before start of actual print operation.... sometime the oozing at bed leveling not enought to prevent abort other times it will and small oozing compared to bed oozing no real issue on print quality so far.

Oozing started recently too many times, not before, have 4.12.1 What's the causes of oozing?

 

Thanks