FAHControl log viewer errors (trivial)

[bb30994]

When viewing a log, the filter by WU and by Slot is inconsistent.

When filtering by WARNINGS & ERRORS I see

******************************* Date: 2019-03-21 *******************************
17:35:30:WU02:FS02:0x22:ERROR:SmartPointer: Can't dereference a NULL pointer!
17:35:30:WU02:FS02:0x22:ERROR:Exception: Failed to open 'logfile_01.txt': SmartPointer: Can't dereference a NULL pointer!: Success
17:35:30:WU02:FS02:0x22:ERROR:Exception: Failed to open 'science.log': SmartPointer: Can't dereference a NULL pointer!: Success
17:35:30:WU02:FS02:0x22:WARNING:While cleaning up: Win32: 0xc0000005: Exception access violation
17:35:34:WARNING:WU02:FS02:FahCore returned an unknown error code which probably indicates that it crashed
17:35:34:WARNING:WU02:FS02:FahCore returned: WU_STALLED (127 = 0x7f)
******************************* Date: 2019-03-21 *******************************
******************************* Date: 2019-03-22 *******************************

Every one of those messages is WU02:FS02
When also filtering by either Slot2 or WU2 (or both). I see only

******************************* Date: 2019-03-21 *******************************
17:35:34:WARNING:WU02:FS02:FahCore returned an unknown error code which probably indicates that it crashed
17:35:34:WARNING:WU02:FS02:FahCore returned: WU_STALLED (127 = 0x7f)
******************************* Date: 2019-03-21 *******************************
******************************* Date: 2019-03-22 *******************************

Why are the messages from core22 not shown?