Fix: WordPress 5.0.2 Gallery Block Images Expand to Fill a Row

I haven’t been able to discover the rationale behind it, but the developers of the Gallery Block for WordPress 5.x, at least up until version 5.0.2, decided that images should expand to fill a row in the gallery.

WordPress Gallery Block Images Expand to Fill a Row
Gallery Block: with Flex-Grow Set to One

If, for example, you have a Gallery Block with the columns set to three, and there is a row with less than three images in it, the images will expand proportionally to fill the available space. Two images will expand to fill half the space, and one image will expand to fill the entire width of the column.

As you can see in the image “Gallery Block: with Flex-Grow Set to One,” the bottom row of the Gallery Block is filled with a single image that has expanded to fill the entire row. It’s not a particularly bad effect, but it certainly takes away from the images that aren’t so large.

My clients were not happy.

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