What is wrong with the HID descriptor?

Question

C++ / C#

Good day to all.
For an hour I've been toiling over the problem with the HID descriptor. There is a HID Report Descriptor:

const uint8_t CustomHID_ReportDescriptor[CUSTOMHID_SIZ_REPORT_DESC] =
  {
    0x06, 0xff, 0x00,      /* USAGE_PAGE (Vendor Page: 0x00FF) */
    0x09, 0x01,            /* USAGE (Demo Kit)                 */
    0xa1, 0x01,            /* COLLECTION (Application)         */
    /* 7 */

        0xa1, 0x03,            /*   COLLECTION (Report 1) */
            /* Data, device --> host (INPUT) */
            0x85, 0x01,                         /*     REPORT_ID (1)              */
            0x09, 0x01,                         /*     USAGE (DATA TO HOST)       */
            0x15, 0x00,                         /*     LOGICAL_MINIMUM (0)        */
            0x26, 0xff, 0xff,                   /*     LOGICAL_MAXIMUM (65535)    */
            0x75, 0x10,                         /*     REPORT_SIZE (16)           */
            0x95, 0x01,                         /*     REPORT_COUT (1)            */
            0x81, 0x02,                         /*     INPUT (Data,Var,Abs)       */
        0xc0, 	               /*   END_COLLECTION      */
    /* 25 */

        0xa1, 0x03,            /*   COLLECTION (Report 2) */
            /* Current mode, device --> host (INPUT) */
            0x85, 0x02,                         /*     REPORT_ID (2)              */
            0x09, 0x02,                         /*     USAGE (MODE TO HOST)       */
            0x75, 0x08,                         /*     REPORT_SIZE (8)            */
            0x95, 0x01,                         /*     REPORT_COUT (1)            */
            0x15, 0x00,                         /*     LOGICAL_MINIMUM (0)        */
            0x26, 0x00, 0x07,                   /*     LOGICAL_MAXIMUM (7)        */
            0xb1, 0x82,                         /*     FEATURE (Data,Var,Abs,Vol) */
        0xc0, 	               /*   END_COLLECTION      */
    /* 43 */

        0xa1, 0x03,            /*   COLLECTION (Report 3) */
            /* Table, device <-- host (OUTPUT) */
            0x85, 0x03,                         /*     REPORT_ID (3)              */
            0x09, 0x03,                         /*     USAGE (TABLE TO DEVICE)    */
            0x75, 0x10,                         /*     REPORT_SIZE (16)           */
            0x95, 0x02,                         /*     REPORT_COUT (2)            */
            0x15, 0x00,                         /*     LOGICAL_MINIMUM (0)        */
            0x26, 0xff, 0xff,                   /*     LOGICAL_MAXIMUM (65535)    */
            0xb1, 0x82,                         /*     FEATURE (Data,Var,Abs,Vol) */
        0xc0, 	               /*   END_COLLECTION      */
    /* 61 */

        0xa1, 0x03,            /*   COLLECTION (Report 4) */
            /* Required mode, device <-- host (OUTPUT) */
            0x85, 0x04,                         /*     REPORT_ID (4)              */
            0x09, 0x04,                         /*     USAGE (MODE TO DEVICE)     */
            0x75, 0x08,                         /*     REPORT_SIZE (8)            */
            0x95, 0x01,                         /*     REPORT_COUT (1)            */
            0x15, 0x00,                         /*     LOGICAL_MINIMUM (0)        */
            0x26, 0x00, 0x07,                   /*     LOGICAL_MAXIMUM (7)        */
            0xb1, 0x82,                         /*     FEATURE (Data,Var,Abs,Vol) */
        0xc0, 	               /*   END_COLLECTION      */
    /* 79 */

        0xa1, 0x03,            /*   COLLECTION (Report 5) */
            /* CRC and angles, device --> host (INPUT) */
            0x85, 0x05,                         /*     REPORT_ID (5)              */
            0x09, 0x05,                         /*     USAGE (CRC TO HOST)        */
            0x75, 0x10,                         /*     REPORT_SIZE (16)           */
            0x95, 0x02,                         /*     REPORT_COUT (2)            */
            0x15, 0x00,                         /*     LOGICAL_MINIMUM (0)        */
            0x26, 0xff, 0xff,                   /*     LOGICAL_MAXIMUM (65535)    */
            0xb1, 0x82,                         /*     FEATURE (Data,Var,Abs,Vol) */
            0x85, 0x05,                         /*     REPORT_ID (5)              */
            0x09, 0x05,                         /*     USAGE (CRC TO HOST)        */
            0x81, 0x02,                         /*     INPUT (Data,Var,Abs)       */
        0xc0, 	               /*   END_COLLECTION      */
    /* 97 */

    0xc0 	               /*     END_COLLECTION               */
    /* 98 */
  }; /* CustomHID_ReportDescriptor */

For some reason, when I change any of these two fields

0x75, 0x10,                         /*     REPORT_SIZE (16)           */
0x95, 0x02,                         /*     REPORT_COUT (2)            */

one of Report 5 or Report 1, then the size changes for both when I receive packets on the host. Moreover, these packages are empty, i.e. Raw data is not displayed there at all. I use USBLyzer for debugging.

What's wrong? I suspect that the problem is in the clumsiness of the descriptor written by me.
UPD1: I missed something - if I change REPORT 5, then REPORT 1 changes with it, but not vice versa.