The MKVToolNix Batch Tool, a standalone program that merges video/subtitle sets in bulk via a built-in version of MKVToolNix, is listed in red as being out-of-date (presumably detected as being a version of MKVToolNix itself). As the program, unlike MKVToolNix, is not supported, it is accurately excluded from the "20/20 Apps Up To Date!" message yet still remains on the detected program list in red after each update as if it were an unupdatable second copy of MKVToolNix on my system.