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Please review https://dolphinscheduler.apache.org/en-us/docs/development/issue.html when describe an issue.

Describe the bug
double click D, and double click B. the shell content cannot display.

To Reproduce
Steps to reproduce the behavior, for example:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Which version of Dolphin Scheduler:
-[1.1.0-preview]

Additional context
Add any other context about the problem here.

Requirement or improvement

• Please describe about your requirements or improvement suggestions.