Hidden blocks can not be unhidden

Testing in Moodle 3.7: Moodle 3.7,  theme Boost Login as any user Navigate to your dashboard Click the "Customise this page" button Click the "Add a block" button Choose a block, for example the Tags block On the newly added block click the gear icon in the top right Click hide block Verify  the block content is completely hidden, the block should still be visible Verify  the block heading text is a lighter grey Moodle 3.7,  theme Classic Login as any user Navigate to your dashboard Click the "Customise this page" button Select a block from the "Add a block" Selector Choose a block, for example the Tags block On the newly added block click the gear icon in the top right Click hide block Verify  the block content is completely hidden, the block should still be visible Verify  the block heading text is a lighter grey Moodle 3.6 and 3.5, Theme Clean Login as any user Navigate to your dashboard Click the "Customise this page" button Select a block from the "Add a block" Selector Choose a block, for example the Tags block On the newly added block click the gear icon in the top right Click hide block Verify  the block content is completely hidden, the block should still be visible Verify  the block heading text is a lighter grey