A DESCRIPTION OF THE PROBLEM :
If I switch keyboard layout to Czech QWERTY, I cannot write curly braces using shortcut AltGr + Shift + { or AltGr + Shift + }. Shortcuts Alt+123 and Alt+125 work.

In case of Czech QWERTZ everything works.

REGRESSION : Last worked in version 11

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1) Start JShell in Windows CMD.
2) Switch keyboard to Czech QWERTY.
3) Type shortcut AltGr + Shift + { (the key next to "P") or shortcut AltGr + Shift + }.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
In case of shortcut AltGr + Shift + {, the "{" character will occur on the screen.
In case of shortcut AltGr + Shift + }, the "}" character will occur on the screen.
ACTUAL -
The text "<press tab again to see all possible completions; total possible completions: 543>" is written to the console.

CUSTOMER SUBMITTED WORKAROUND :
Usage of shortcuts Alt+123 and Alt+125 or switch keyboard to Czech QWERTZ or another.

FREQUENCY : always