Vipul,
1. Are you invoking the shortcuts when in CodeMix editor? The CodeMix related shortcuts should be invoked when you are in a CodeMix editor. Please recheck.
2. Can you please check if the CodeMix key bindings are enabled here : Window > Preferences > CodeMix > Miscellaneous > Bindings? If they are unchecked, please check all three entries and save.
3. You can change the key bindings from the Window > Preferences > General > Keys page in case there is a clash with your existing bindings.
4. If you are still seeing issues, please share the OS and version details along with the Eclipse version details to help us investigate further. Also share a screenshot of the existing bindings for Ctrl+P and Ctrl+Shift+P from the Keys preference page (type the shortcut in the filter box to get the list of bindings for the particular shortcut)
–Swapna
Genuitec Support