The title says it all, similar bug happened to many other non-solid-block tile entities in VS1 so I hope this can be fixed.

Attaching an image for illustration.

Version:
alpha4
Replicating:

• Assemble a Valkyrien ship
• Place a mana spreader on it

Other things that are invisible on ships (seems to be an issue with Botania only):

• Floating flowers
• Mana pylons
• Corporea Index
• Teru Teru Bozu
• Animated Torch
• Manatide Bellows
• Hoevering Hourglass

Also, the issue is gone entirely if Eureka is installed. All of the above is visible.