[0.12.1-linux] During loop video.getTexture() blanks green

problem:
i am trying to get a video player to loop properly in openframeworks but i get ocational blanking on the point where it loops.

image of bug:

video of bug:

relevant code:

class VideoContent : public Content
{
private:
    ofVideoPlayer video;
    ofTexture tex;

public:
    void setup(string filename)
    {
        if (ofFile(filename, ofFile::Reference).exists())
        {
            ofLogNotice("VideoContent") << "Loading video: " << filename;

            // OPTIMIZATION: Use RGBA to avoid heavy CPU YUV->RGB conversion
            video.setPixelFormat(OF_PIXELS_RGBA);

            video.load(filename);
            video.setLoopState(OF_LOOP_NORMAL);
            video.play();
        }
        else
        {
            ofLogNotice("VideoContent") << "Error: " << filename << " doesnt exist!";
        }
    }

    void start() override
    {
        // if (!video.isPlaying())
        // {
            video.play();
        // }
    }

    void stop() override
    {
        // if (video.isPlaying())
        //     video.setPaused(true);
    }

    void update() override
    {

        video.update();
        if (video.isFrameNew())
        {
            tex = video.getTexture();
        }
    }

    ofTexture getTexture() override
    {
        if (tex.isAllocated())
        {
            return tex;
        }
        else
        {
            return TestTexture::getInstance().getTexture();
        }
    }
};

source: https://codeberg.org/supernihil/invasiv/src/branch/main/invasiv_app/src/WarpController.h#L60

here is my complete setup:
https://codeberg.org/supernihil/invasiv

i am building in a docker container (https://codeberg.org/supernihil/invasiv/src/branch/main/Dockerfile)
with all dependencies locked down to git hashes

Start by reproducing the loop in the linked WarpController.h code, using the pinned dependencies and build setup in Dockerfile. Trace ofVideoPlayer.update(), isFrameNew(), and getTexture() at the loop boundary; done means the video texture no longer blanks green during looping on Linux.