Order of choices is not stable

[ImaCrea]

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Describe the bug I put answers for a multiple choice or dropdown type of question but their order is not the same when I access then the form to complete it. It doesn't happen all the time, it looks random.

To Reproduce Create a multiple answers or dropdown type question (didn't try with other)

Expected behavior Order of answers should be consistent and follow what from author has set.

Screenshots I did a video capture as it may be easier to understand.

https://user-images.githubusercontent.com/764332/124580143-22f28080-de50-11eb-9054-6408b401851a.mp4

The video shows only the case for multiple choices but it's the same for dropdowns from what I tested (and maybe other type also)

Nextcloud (please complete the following information):

• Nextcloud-Version: 19
• Forms-Version: 2.2.4

Desktop (please complete the following information):

• OS: Mac 10.16.6
• Browser FF
• Version 89.0.2

Additional context

Thanks for your great help and this awesome app. Can't wait to use it fully :)