Multiple tabs are often opened during project development, but idea only displays one line of tabs by default. If too many tabs are opened and one line cannot be displayed, the tabs will be automatically closed. If you can set to open multi-line tab tags, it can facilitate development and greatly improve development efficiency.
The multi-line tab label is set as follows:
Open the File - Settings - Editor - Editor tabs page, set and select Multiple rows.
At the same time, you can set how many tab tags to display:
