X Error: BadWindow when closing clock applet calendar popup

[P]

have the regular clock kicker applet showing time and date
then left click on it,
calendar should appear,
then left click on the clock applet again to make calendar disappear

this triggers X errors :

X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 20
  Minor opcode: 0
  Resource id: 0x18030a3
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 20
  Minor opcode: 0
  Resource id: 0x18030a3
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 20
  Minor opcode: 0
  Resource id: 0x18030a3

[Jonathan Riddell (jr)]

Something is trying to reference the calendar window and it's already gone. Could be many things
but those errors don't actually result in anything bad (e.g. performance problems, memory leaks,
crashes, etc).

[Barry deFreese (bddebian)]

I cannot reproduce this in Dapper. Is this still an issue? Thank you.

[P (p92)]

yes it seems fixed in dapper.