NobleSprite issue with animation

[rubybrowncoat]

Describe the bug
I can't get a NobleSprite to display an animation from a table.

Screenshots/Code snippets
This is my class.

BigExplosion = {}
class("BigExplosion").extends(NobleSprite)

local prefix <const> = "[BigExplosion] "

function BigExplosion:init(__x, __y)
    BigExplosion.super.init(self, "assets/images/big-explosion", true, true, false)

    self:add(__x, __y)
end

function BigExplosion:update()
    BigExplosion.super.update(self)
    
    print(prefix .. "Current frame: " .. self.animation.currentFrame)
end

Additional context
Other NobleSprites without an animation work fine.

From the update function print, currentFrame stays at 1, but I also don't see the first frame on the screen. Position seems fine and the scene appears to contain the sprite correctly.

[rubybrowncoat]

Just a little addendum: if I manually call self.animation:draw() in BigExplosion:update() the currentFrame progresses to the correct endFrame (+1) but I still don't see anything on screen.