[Gimp-user] LOCK alpha

[Lordgil <forums gimpusers com>]

I'am new 
I am on windows 10    Gimp 2.10

I often very often use the eraser tool, and each time thpixel  and alpha channel
are locked
I don,t need this to do
I   tried   Edit / Preference   toolbox     reset to  default   save and this
don't work
on a next  restart   I did it  several  times  and nothing 
Is there another trick  to avoid this  lock  alltime
Thank You

-- 
Lordgil (via www.gimpusers.com/forums)