Bug/1056 ios app crashing on rejoin

[ygit]

Description

Closes -

• 1056

Pre-launch Checklist

• [X] The Documentation is updated accordingly, or this PR doesn't require it.
• [X] I updated/added relevant documentation (doc comments with ///).
• [X] I listed at least one issue that this PR fixes in the description above.
• [X] I added new tests to check the change I am making, or this PR is test-exempt.
• [X] All existing and new tests are passing.