Hey @Aline, welcome to the forum + thanks for the questions.
Definitely update your phone to the latest version.
21.11 was ancient, and a ton of things have been fixed since then.
Hmmm, well, that’s definitely not normal.
Q1. And same thing happens in both your devices?
Q2. Can you give a little more info on:
- What exact devices are they?
- What OS versions?
- The 3-line menu > About info from Collabora app.
Q3. And is this a problem with ALL your documents? Or only old ODS files you’ve carried over from other versions?
Q4. Where are you saving this copy file to? Do you know which folder?