Reading property of undefined when switching repo in activity dashboard

[nknguyenhc]

Describe the bug
Cannot read property of undefined (reading 'id')

To Reproduce
Steps to reproduce the behavior:

1. Go to activity dashboard.
2. Switch to another repo within activity dashboard.

Note that no activity shows up. However, this is not observed with the following steps:

1. Go to activity dashboard.
2. Switch to issues viewer.
3. Switch back to activity dashboard.

Some activity shows up.

Expected behavior
There should not be any bug as described.

Screenshots

Desktop (please complete the following information):

• OS: Window 10
• Browser: chrome
• Version: 1.1.0

Additional context
This might be due to unnecessary call to issueService. The line occurs in issueService::updateLocalStore method:

  private updateLocalStore(issuesToUpdate: Issue[]) {
    const newIssues = { ...this.issues };
    issuesToUpdate.forEach((issue) => {
      newIssues[issue.id] = issue;
    });
    this.issues = newIssues;

    this.issues$.next(Object.values(this.issues));
  }

The given issuesToUpdate parameter is an array of undefineds, i.e. [undefined, undefined, ...]