SUMMARY

There is missing an "Open in Current Tab" action (left mouse click on folder/file or Enter key) in the "Configure Keyboard Shortcuts". The default key is Enter and it is impossible to modify this.
There are only "Open in New Tab" or "Open in New Window" actions, and the "Open in Current Tab" is missing.

This leads to inconveniences, since for example - it is impossible to open an item with spacebar key as it is default behavior in many other file managers.


STEPS TO REPRODUCE
1. Open any folder in Dolphin
2. Select (highlight) any file or folder in the main window
3. Press Spacebar key (nothing happens here)
4. Click the background
5. Press Spacebar key again
6. Observe, that previously selected item gets highlighted again, but nothing is being opened or being run.

Second part:
1. Navigate to Settings -> Configure Keyboard Shortcuts
2. Try to find the "Open in Current Tab" action (in order to set it to "Enter<or>Spacebar" keys)
3. Observe that there are only "Open in New Tab" or "Open in New Window" options possible, and "Open in Current Tab" is missing.


OBSERVED RESULT
"Open in Current Tab" shortcut key setting is missing.

EXPECTED RESULT
"Open in Current Tab" shortcut key setting should be present and set to Enter key by default. When modified to another key, pressing that key should cause exactly the same result as previously pressing Enter key in main window.

SOFTWARE/OS VERSIONS
Dolphin version 21.12.0

ADDITIONAL INFORMATION
none