Button label error

Hi,

the label text in the button has some errors.
The standard example shows “Read on the button, including ” and without more or less. It seems to have problems with spaces.

If I set it to this:

[expander_maker id="1" more="Read<br>more" less=“Read less“]Hidden text[/expander_maker]

after loading the page, the <br> works fine but after clicking the button twice, it will show the label Read<br>more

Any hints?
Thanks!