[Bug] Filtered deck doesn't mix learning with reviews

[szalejot]

Reproduction Steps

1. Create a filtered deck
2. Use search criteria: deck:"MyDeck" is:due
3. cards selected by: Random

Expected Result

When in the review of this filtered deck random mix of learning and review cards should appear.
Learning cards have intervals of 1 day.
This is how this deck behaves on the Anki desktop - V3 scheduler.

Actual Result

When in the review of this filtered deck first all learning cards are presented, only then reviews.

Debug info

AnkiDroid Version = 2.15.6

Android Version = 8.0.0

Manufacturer = asus

Model = ASUS_Z01HD

Hardware = qcom

Webview User Agent = Mozilla/5.0 (Linux; Android 8.0.0; ASUS_Z01HD Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/99.0.4844.88 Mobile Safari/537.36

ACRA UUID = ffc51eb1-d4d4-4314-a51d-a8de3cb61665

Scheduler = std2

Crash Reports Enabled = true

DatabaseV2 Enabled = true

Research

Enter an [x] character to confirm the points below:

• I have read the support page and am reporting a bug or enhancement request specific to AnkiDroid
• I have checked the manual and the FAQ and could not find a solution to my issue
• I have searched for similar existing issues here and on the user forum
• (Optional) I have confirmed the issue is not resolved in the latest alpha release (instructions)

[BrayanDSO]

We currently only support up to V2 scheduler. It will be probably quite some time until we support V3.

[szalejot]

@BrayanDSO But if there are learning with a 1 day steps, shouldn't this combination also work on V2?

[mikehardy]

This needs someone more familiar with the scheduler then me, suggest either @david-allison or @Arthur-Milchior otherwise I (or someone else) is going to need to do some scheduler research since I don't use filtered decks myself and am not sure what the behavior should be.

[github-actions]

Hello 👋, this issue has been opened for more than 2 months with no activity on it. If the issue is still here, please keep in mind that we need community support and help to fix it! Just comment something like still searching for solutions and if you found one, please open a pull request! You have 7 days until this gets closed automatically