Adaptor items update

I have a tablayout (2 tabs) and after applying an action on a item I repopulate both lists.

Ex: tab1 has item1 and item2
tab2 has item3 and item4

Problem details:
1.After applying on action on item2 I am getting item2,item3,item4 (in the fragment) and setting the data to the adapter (to reinitialize the items), but somehow I get item3,item4,item3.
2.If I remove item3 then item4 becomes item3 somehow...

Debugging: I debugged the application and everything seems fine on my side (item2,item3,item4 are sent as expected - I had a different approach and worked well)

Extra: When the activity loads I send the items and everything seems fine, after a "data refresh" something weird happens....
I use org.greenrobot:eventbus:3.0.0 to communicate from tab1 to the activity, then the activity sends an event telling both fragments to reinitialize adapter data.

Do not hesitate to contact me for other details that might help.

Regards,
Negreanu Calin

Start by reproducing the refresh flow described across the activity, both fragments, the adapters, and the org.greenrobot:eventbus:3.0.0 events. Trace the item lists immediately before and after adapter reinitialization, including removal of item3. Done means refreshed tab contents remain in the expected order without duplicated or shifted items.

Written by the indexing model from the issue text.