Hi.
After leaving a question under the title "The irregular bug of <ejs-tab>, I sent the video by mail because the video was not attached, but I will attach the entire source because you answered that you failed to implement the same example. I would appreciate it if you could check and provide an appropriate solution for the bug. The peculiarity of the source is that it controls tab content only with one content, not multiple.
Attachment:
tab_content_bug_files_c70d5b02.zip