Block freezing option to avoid accidental editing

It would be nice to have the option of freezing a block so that it cannot be edited.
It often occurs to me that I create a (markdown) table to display some data and then I’ve to select them.
Every time I forget that clicking on the table will enable edit mode :smiley:

It would be great if we could have the opportunity to “lock” or “freeze” a Block so that it cannot be edited (thus text selection mode is enabled).

Keep up the great work!