Its`s possible to create several categories with is default = true

[maistrenkoIulia]

Jmix version: 1.0.0-SNAPSHOT
Jmix Studio plugin version: 1.0.SNAPSHOT2626-202
IntelliJ version: IntelliJ IDEA 2020.3.2 (Community Edition)

TC:
create the project with dynamic attribute component
create entity
run app
admininstarion -> dynamic attributes
create category -> set is default = true
create second category for the same entity -> set is default = true
ER: flag is default for first category should reset
AR:

[maistrenkoIulia]

reproduced on
Jmix version: 1.0.0-SNAPSHOT
Jmix Studio plugin version: 1.0.SNAPSHOT2820-211
IntelliJ version: IntelliJ IDEA 2021.1 (Community Edition)

[bulgakovea]

Can't reproduce.
TC 1 :
1 - create Category "t1". in editor check "Is default". Save
2 - create Category "t2". in editor check "Is default". Save.
Result:
t1 - Is default - unchecked
t2 - Is default - checked

TC 2:
1 - create Category "t1" and "t2" with unchecked "Is default"
2 - check t1 "Is default". save
3 - check t2 "Is default". save
Result:
t1 - Is default - unchecked
t2 - Is default - checked

[maistrenkoIulia]

reproduced
Jmix version: 1.0.0-SNAPSHOT
Jmix Studio plugin version: 1.0.SNAPSHOT2876-211
IntelliJ version: IntelliJ IDEA 2021.1.1 (Community Edition)

[bulgakovea]

@maistrenkoIulia
Actually, this is the expected behavior of the system.
You are trying to create a category for multiple entity types (in this case, "user" and "person").
Each entity type can have its own default category.

[maistrenkoIulia]

verified