Steps to reproduce:
1. Open attached project
2. Comment out line 66 of SetMatValues.cs
3. Built to device
-- Inspect characters on the number plate

Expected behaviour: Number plate is 'F' and 6 blank spaces
Actual behaviour: Number plate is 'F' + some garbage characters

Reproduced on: 5.6.1p1, 5.6.5p1, 2017.1.3f1, 2017.2.1p2, 2017.3.0b4, 2018.1.0b4

Devices Under Testing:
Reproduced:
Google Nexus 7, OS:4.4.4, CPU:armeabi-v7a, GPU:Adreno (TM) 320, Build:google/razor/flo:4.4.4/KTU84P/1227136:user/release-keys
Sony C6603 (Xperia Z), OS:4.4.4, CPU:armeabi-v7a, GPU:Adreno (TM) 320, Build:Sony/C6603/C6603:4.4.4/10.5.1.A.0.292/2_53rQ:user/release-keys
Galaxy S4 Mini NFC, OS:4.4.2, CPU:armeabi-v7a, , GPU:Adreno (TM) 305, Build:samsung/serranoltexx/serranolte:4.4.2/KOT49H/I9195XXSCQAE:user/release-keys

Not reproduced:
Google Nexus 7, OS:6.0.1, CPU:armeabi-v7a, GPU:Adreno (TM) 320, Build:google/razor/flo:6.0.1/MMB29K/2419427:user/release-keys
Htc HTC One mini 2, OS:4.4.2, CPU:armeabi-v7a, GPU:Adreno (TM) 305, Build:htc/htc_europe/htc_memul:4.4.2/KOT49H/405590.2:user/release-keys
Motorola XT1032, OS:5.1, CPU:armeabi-v7a, GPU:Adreno (TM) 305, Build:motorola/falcon_retuglb/falcon_umts:5.1/LPBS23.13-58-2/2:user/release-keys
Lge LG D802 (G2), OS:4.4.2, CPU:armeabi-v7a, GPU:Adreno (TM) 330, Build:lge/g2_open_com/g2:4.4.2/KOT49I.D80220h/D80220h.1413914494:user/release-keys
Lge LG D855 (G3), OS:5.0, CPU:armeabi-v7a, GPU:Adreno (TM) 330, Build:lge/g3_global_com/g3:5.0/LRX21R.A1445306351/1445306351:user/release-keys
Lge LG H340n, OS:5.0.1, CPU:armeabi-v7a, GPU:Adreno (TM) 306, Build:lge/c50n_global_com/c50n:5.0.1/LRX21Y/151672304cd28:user/release-keys

Fixed in: 2018.2.0b1