When the program starts, when the showBoot() function is launched, the screenMode is checked and the showPorts function is launched, which in turn executes the renderPorts() function in a loop. While renderPorts is running, the screenMode may change, for example to ShowLines (when showString() was run). It may turn out that the mode has changed, and the renderPorts method has not been fully executed ... in the future, it will draw its own graphics on the screen, although we do not expect to see them already, because. a regime change has occurred. I added checks inside the function before displaying.
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