Hello @Crstm,
yes, it is lost. Doing systematic testing and a full pre-test is always recommended.
As far as we can see, unfortunately there is a . (dot) on the Enketo keyboard entry on Android, but such entry is directly blocked/not accepted in Firefox. In Chrome and Opera, similar keyboard, but the . (dot) entry is even accepted, but lost on save and there is no spinner element. So, in Chrome and Opera on Android negative numbers cannot be entered!
In Collect there is no . (dot), but a minus sign which is missing in Enketo.
It seems even a bug in Enketo on Android, as negative numbers cannot be entered with the keyboard, but only with the spinner element. @Kal_Lam to check this, please. (Tested with Enketo and ODK v2022.2.1 on Android 5.0 and 11, French smartphone language)
Enketo with Firefox 100.1.1 (on Samsung Android)
Enketo with Chrome (on Samsung Android)
Collect (ODK)
A workaround for negative integer/decimals might also be to use text type with number appearance, see https://docs.getodk.org/form-question-types/#number-text-widget.
