TinySA Ultra LNA setting causes Waterfall display issues

[RussellAult]

Steps to reproduce

1. Enable "WATER FALL" in the "DISPLAY" menu
2. Enable "LNA" in the "LEVEL" menu
3. Clear the display memory again (e.g. open the menu and close it again)

Expected results

The waterfall is blanked and then regenerated.

Actual results

The waterfall is blanked and then only the leftmost two or three pixels are regenerated. Clearing the display memory additional times produces the same result (i.e. the only way to get the waterfall to appear with the LNA on is to cycle the LNA off and back on after other every display memory clearing). Presets with the LNA enabled produce the same two-pixel waterfall when recalled.

System information

HW version V0.4.5.1.1 Firmware version 1.4-156-g4eb315d All self-checks passed