odd windowing when selecting "preferences" for calculator on u8 zesty

[kevin gunn]

this is on the Feb 27 iso of zesty, clean u8 exploration

there are several issues that occur when repro'ing:
1) open app drawer, launch the calculator app
2) click the concentric circles in upper left corner to reveal the menu
3) select "prefereces"
4) go to the "Number Format" drop down and click

result: - there's an odd transparent window covering the parent window
- there's a flicker associated with the preferences child window panel
- upon dismissing, there's a residual small transparent dark rect near the "number format" drop down area (it will follow the child window moving)

note: selecting other drop downs will result in similar, as well the subsequent dropdowns will occupy the dark transparent rect (seemingly not located in the right position)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Duplicate of bug 1665286