Disappearing Solar Pillar on Linux Mint 19.2

I'm trying to nail down a problem playing the GOG Linux version of Terraria under Mint 19.2. During the Celestial Invasion event, the Lunar Pillar disappears as soon as it comes in range, but before it appears on screen. The background and music fade out and solar enemies stop appearing. I don't get any solar fragments. It's the only one of the four pillars that does this. The rest of the event and the fight with the Moon Lord proceeds as usual.

Oddly, on the same computer and OS using the...

Disappearing Solar Pillar on Linux Mint 19.2