The classes remain checked/uncheck on "Choose Classes" page, after removing/adding them.

[AdrianMargineanu]

20201009_144017.zip

Describe the bug
If a user uncheck/check one or more classes, on "Choose classes" page, apply the changes and then reenter on the same page, it can be observed that the classes remain in the same state as before applying change. Please consider that if the user goes bat to timetable tab after editing the classes and reopen the add class page the issue would not occur.

To Reproduce
Steps to reproduce the behavior:

1. Go to timetable tab
2. Click on classes
3. Click on add class
4. Click on any class
5. Click on save
6. Click on add class again
7. See error

Expected behavior
After removing or adding a class and reopening the "Choose class" page, the new classes should be check and over to be uncheck

Screenshots
For a better understanding of the issue, please see the video in the zip folder

Desktop (please complete the following information):

• OS: Windows
• Browser Mozilla Firefox
• Version 81

Smartphone (please complete the following information):

• Device: Huawei p20 lite
• OS: Android 9.1.0
• Browser: Chrome
• Version 86.0.4240.75

Additional context
The same problem may be observed on Android version on the same smartphone