Hi,
Just noticed that Bootstrap 4 Wordpress starter blocks seems to have a problem. Most work except for the Galleries, there seems to be 4 of them Gallery 1.1, 1.2, 1.3 and 2. When added to the page they throw up lines of php code over the top of the gallery and over the right hand image, this happens on all four galleries. Not noticed this on any other blocks. Non Wordpress Bootstrap 4 gallery blocks work fine. Either there is an issue or I have some corrupted files somewhere.