Ok, thanks for the sanity check Jules! I determined that the Graphics::drawText call is causing the leak for me. For example:
Image image (Image::ARGB, imageWidth, imageHeight, true);
Graphics g (image);
int w = imageWidth/100.0;
int h = imageHeight/100.0;
int x = 0, y = 0;
const String str ("billy, bob, joe!!!");
for (int i = 0; i < 100; ++i) {
    g.drawText(str, 10, y, 100, 40, just); // This leaks
    y += 10;
    //g.drawEllipse(x, y, w, h, 1); // ...but this doesn't
    //x += w;  y += h;
}
texture.release(); // make sure to free any previous texture memory
texture.loadImage(image);
I will also mention that this section of code is getting called inside a OpenGLRenderer::renderOpenGL() so it is executing on the background GL thread, rather than the typical Component::paint()… maybe that has something to do with the leaking?
I also found out that Font::getStringWidthFloat() is leaking as well inside the same section of my code (inside a renderOpenGL() callback):
Font font (fontName, cellHeight, fontStyle);
const String str ("billy, bob, joe!!!");
float len = 0;
for (int i = 0; i < 100; ++i) {
    len += font.getStringWidthFloat(str);
}
Furthermore, I discovered that this leak is being caused by the Font::getTypeface() call because changing to:
float Font::getStringWidthFloat (const String& text) const
{
    float w = 10; //getTypeface()->getStringWidth (text);
    if (font->kerning != 0)
        w += font->kerning * text.length();
    return w * font->height * font->horizontalScale;
}
fixes the leak. I’m really at a loss as to how to fix/workaround these two leaks. I can’t find any other way to draw text with a Juce Font to a OpenGLTexture. Am I using these classes in a way they weren’t designed for? Thanks very much for the feedback!
Also, I tried putting the Graphics::drawText() and Font::getStringWidth() calls into the Component::paint() callback and they were still leaking. Is that the expected behavior? If you want to redraw correctly sized text whenever the window is resized are you stuck with having a leak?
