Synchronization issues with Tags

[eshurakov]

Renaming a tag from iOS results in a blank tag showing inside a note in the web app.
Trying to do something with this tag later in the web app results in tags duplication and synchronization issues.

Please take a look at the following video:
Tags.mov.zip

Expected

Tags look and order is the same on all devices.

Observed

• Tags are in a different order
• Renaming a tag on iOS results in an empty tag on the web
• Duplicated tags
• Invincible tags that can't be deleted

Reproduced

0. Open the web app and iOS app
1. On the web: add tags t1, t2, t3, t4 to the note
2. See that the order of tags is different
3. iOS: Rename t2 to t2-1
4. Web: Tag t2 in the note becomes empty
5. Web: Rename tag t2-1 to t2-1-1
6. Web: There are now 2 tags t2-1-1

Where did you see the bug

• System Make: Apple
• System Model: Macbook
• OS: Catalina
• OS version: 10.15.7
• Browser (if applicable): Safari
• Browser version (if applicable): 14
• Simplenote app version:

[codebykat]

@belcherj was this fixed by #2455 or is that a separate issue?

[belcherj]

This is still an issue. We have different encoding on different platforms and when the encoding is different we run into issues.

[belcherj]

• Add the tag "a" to a note in electron or ios.
• On iOS edit the tag in the tag list to "a-1".
• On web notice that it is blank

This is because ios hashes differently than Android and Web