Unhide code in Live Script

I discovered and pressed the "Hide Code" button on the right margin of the editor while working on a .mlx file.

It works unidirectionally: I can't unhide the code.

This state appears to be persistent: Restarting MATLAB and OS has no effect.

Restarting MATLAB using an historical editor-state, also has no effect, suggesting the view state is bound to the file. (It also suggests I've accidentally saved the .mlx file.)

Further, the reopened file flags the following warning:

I also tried to open/save script using an earlier release. The code fields reappear in R2018b, but saving the .mlx file doesn't change the hidden state when re-opening in R2019a.

Aside: The «hide code» button appears to act like a radio button grouped with the two view-options for placement of output. (This seems an odd choice.) So activating one of the other two, changes the target button-state, but not the view-state.

R2019a + macOS 10.14.4

Answer 1

[Sean de Wolski]

Install Update 2 (should appear in upper right hand corner of desktop if online), it fixes this bug.

Answer 2

[Evan Bentz]

You can just copy the hided code and paste it in a new script - it will unhide it