Change of sorting also changes the grouping and vice versa

If you switch from "sorting by date" with "grouping by date" to "sorting by state" the grouping (in the selection column) automatically becomes "None" while the grouping by date is still shown and is no longer consistent.
Subsequently changing the grouping from "none" to "date" also automatically changes the sorting which changes from "state" to "date".

Steps to reproduce:

• select sorting by "date" and grouping by "date"
• STEP 1: change sort order from "data" to "status (read)"
• STEP 2: change the grouping from "none" to "date"

 Expected behaviour:

• STEP 1: the grouping remains selected by "date"
• STEP 2: the sorting does not change and remains fixed for "status (read)"

Actual behaviour:

• STEP 1: the grouping changes and becomes "none"
• STEP 2: the sorting changes and becomes "date"