Why does it perform so poorly in the test7_cross.txt, is this normal？

[FriendChi]

38248.1s | 4060 | ------------Configuration--------- 38248.1s | 4061 | anno_dir: /kaggle/input/culane/CULane/ 38248.1s | 4062 | detect_dir: /kaggle/working/Ultra-Fast-Lane-Detection-v2/log/20240610_063247_lr_6e-03_b_32/culane_eval_tmp/ 38248.1s | 4063 | im_dir: /kaggle/input/culane/CULane/ 38248.1s | 4064 | list_im_file: /kaggle/working/temp/list/list/test_split/test7_cross.txt 38248.1s | 4065 | width_lane: 30 38248.1s | 4066 | iou_threshold: 0.5 38248.1s | 4067 | im_width: 1640 38248.1s | 4068 | im_height: 590 38248.1s | 4069 | x_factor: 1 38248.1s | 4070 | y_factor: 1 38248.1s | 4071 | ----------------------------------- 38248.1s | 4072 | Evaluating the results... 38250.0s | 4073 | tp: 0 fp: 3165 fn: 0 38250.0s | 4074 | no ground truth positive 38250.0s | 4075 | finished process file 38250.0s | 4076 | precision: 0 38250.0s | 4077 | recall: -1 38250.0s | 4078 | Fmeasure: 0 38250.0s | 4079 | ---------------------------------- 38250.0s | 4080 | ------------Configuration--------- 38250.0s | 4081 | anno_dir: /kaggle/input/culane/CULane/ 38250.0s | 4082 | detect_dir: /kaggle/working/Ultra-Fast-Lane-Detection-v2/log/20240610_063247_lr_6e-03_b_32/culane_eval_tmp/ 38250.0s | 4083 | im_dir: /kaggle/input/culane/CULane/ 38250.0s | 4084 | list_im_file: /kaggle/working/temp/list/list/test_split/test8_night.txt 38250.0s | 4085 | width_lane: 30 38250.0s | 4086 | iou_threshold: 0.5 38250.0s | 4087 | im_width: 1640 38250.0s | 4088 | im_height: 590 38250.0s | 4089 | x_factor: 1 38250.0s | 4090 | y_factor: 1 38250.0s | 4091 | ----------------------------------- 38250.0s | 4092 | Evaluating the results... 38391.7s | 4093 | tp: 12870 fp: 8087 fn: 8160 38391.7s | 4094 | finished process file 38391.7s | 4095 | precision: 0.614115 38391.7s | 4096 | recall: 0.611983 38391.7s | 4097 | Fmeasure: 0.613047 38391.7s | 4098 | ---------------------------------- 38391.7s | 4099 | res_normal 0.865127 38391.7s | 4100 | res_crowd 0.65389 38391.7s | 4101 | res_night 0.613047 38391.7s | 4102 | res_noline 0.40263 38391.7s | 4103 | res_shadow 0.624912 38391.7s | 4104 | res_arrow 0.77776 38391.7s | 4105 | res_hlight 0.549101 38391.7s | 4106 | res_curve 0.584699 38391.7s | 4107 | res_cross 0.0 38391.7s | 4108 | 0.6701292552435965