Few clarifications related to bugs:
1 and 2: Make sure the "Linked Issue" field is present on the create issue screen, check the "Issue Type Screen Scheme" and "Link Issues" permission is given to other users' roles who wants to create a link, it will be done in the "Permission Scheme" used in your project.
3. Most likely the board filter is excluding the Bugs. Go to Board | Configure (You should have the rights or ask the administrator of that board)
I hope it helps.
Introducing Jira Cloud for Excel Here at the product integrations team at Atlassian, we are thrilled to announce the new Jira Cloud for Excel add-in! This add-in lets you export Jira data directly ...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events