All the devices are running the last version of Evernote.
OPPO F3 with the Evernote App, signed into account DT.
Samsung J7 with Evernote App, signed into account SLS.
I'm using and Asus Windows PC with Evernote app installed (signed into account DT) and in Edge I'm signed into DT in the Evernote web portal and in Chrome into SLS.
Created notebook TEST1 on Samsung J7 (account SLS) with 1 note and 1 tag (tagtest1).
Tag appears in web portal of SLS.
On Samsung J7 I share the notebook TEST1 with user DT.
Open it via work chat on OPPO account DT: Notebook and note is there, but no tag. See screenshot: OPPO-DT-TEST1. Note that tag view tags is enabled, but even when opening the note the tag is not there.
In the web portal of DT the tag is there correctly. See screenshot: Webportal-DT-TEST1.
In the Windows portal of DT the tag is also there. See screenshot: Windows-DT-TEST1.
And obviously in the web portal of SLS all is correct as well. SLS is the owner of this TEST1 notebook.
Now SLS adds the tag tagtest2 from his Samsung J7 to the same note. The newly added tag is visible in: SLS webportal, of course also on SLS phone the Samsung J7.
It is also visible on DT webportal, gets also synchronised in the Windows portal of DT, but not on the OPPO phone of DT.
Now DT removes 1 tag in the Windows portal. This gets updated to both web portals of DT and SLS. And it gets synchronised to the Samsung J7 of SLS. In DT's OPPO still no tags are showing up.
Now I create a notebook in DT's OPPO and share it with SLS, notebook TEST2. And create 1 note in it with 1 tag. Shared it to SLS, on the Samsung J7 from SLS the tag is not appearing (webportals are OK, have the tag showing) and also DT's Windows portal shows the tag.
DT owner of the notebook now adds a tag in the Windows portal. The new tag gets synchronised to DT's OPPO, but not to SLS's Samsung J7.
DT owner add yet another tag in his OPPO, gets synchronised to both webportals and to DT's Window portal, but not to SLS Samsung J7.
I will now sign out DT from the Windows portal and sign in SLS (can't do this simultaneously as I have only 1 PC).
A new tag created in DT OPPO synchronises to the Windows portal of SLS, but not to the Samsung J7 phone of SLS.
In Windows account from SLS I created a new note in NOTE2 (owned by DT) and tag it with one of the existing tags. In SLS's Samsung J7 the note shows up, but without tag. In DT's OPPO the note shows up with the tag.
Now I have created another note in TEST1 (owner SLS) in the Samsung J7. It gets synchronised to SLS's Windows prtal, but not to DT's OPPO.
I also remember coming across case where it would not synchronise correctly from 1 Windows portal to another, with all changes done in the Windows portal, the note is there, but no tag.
It is very difficult to get some systematics in the behaviour, as it seems very random, but I'm sure there is a system behind the bug...
Thank you for your help, as when sharing amongst collegues it is very difficult if it does not synchronise correctly between different devices.