GitLab

When selecting new icon for a folder or file in my home folder, its isn't changed.
After clicking open, the icon simply stays the same - nothing happens. I never experienced such a problem before.

System:    Host: pop-os Kernel: 5.3.0-18-generic x86_64 bits: 64 compiler: gcc v: 9.2.1 Desktop: Gnome 3.34.1 
           Distro: Pop!_OS 19.10 base: Ubuntu 19.10 Eoan 
Machine:   Type: Desktop Mobo: ASUSTeK model: Z170-DELUXE v: Rev 1.xx serial: <filter> UEFI: American Megatrends v: 3504 
           date: 06/29/2017 
CPU:       Topology: Quad Core model: Intel Core i7-6700K bits: 64 type: MT MCP arch: Skylake-S rev: 3 L2 cache: 8192 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 63999 
           Speed: 800 MHz min/max: 800/4300 MHz Core speeds (MHz): 1: 800 2: 800 3: 799 4: 800 5: 800 6: 800 7: 800 
           8: 800 
Graphics:  Device-1: NVIDIA GP104 [GeForce GTX 1080] vendor: ASUSTeK driver: nvidia v: 435.21 bus ID: 01:00.0 
           Display: x11 server: X.Org 1.20.5 driver: nvidia unloaded: fbdev,modesetting,nouveau,vesa 
           resolution: 3840x2160~60Hz 
           OpenGL: renderer: GeForce GTX 1080/PCIe/SSE2 v: 4.6.0 NVIDIA 435.21 direct render: Yes 
Audio:     Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel 
           bus ID: 00:1f.3 
           Device-2: NVIDIA GP104 High Definition Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel bus ID: 01:00.1 
           Sound Server: ALSA v: k5.3.0-18-generic 
Network:   Device-1: Intel Ethernet I219-V vendor: ASUSTeK driver: e1000e v: 3.2.6-k port: f000 bus ID: 00:1f.6 
           IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full mac: <filter> 
           Device-2: Broadcom and subsidiaries BCM4360 802.11ac Wireless Network Adapter vendor: ASUSTeK driver: wl 
           v: kernel port: e000 bus ID: 07:00.0 
           IF: wlp7s0 state: dormant mac: <filter> 
           Device-3: Intel I211 Gigabit Network vendor: ASUSTeK driver: igb v: 5.6.0-k port: c000 bus ID: 0b:00.0 
           IF: enp11s0 state: down mac: <filter> 
Drives:    Local Storage: total: 2.67 TiB used: 89.97 GiB (3.3%) 
           ID-1: /dev/nvme0n1 model: PCIe SSD size: 111.79 GiB 
           ID-2: /dev/sda vendor: Samsung model: SSD 850 PRO 256GB size: 238.47 GiB 
           ID-3: /dev/sdb vendor: Samsung model: SSD 850 PRO 1TB size: 953.87 GiB 
           ID-4: /dev/sdc vendor: Crucial model: CT1050MX300SSD1 size: 978.09 GiB 
           ID-5: /dev/sdd vendor: Kingston model: SH100S3120G size: 111.79 GiB 
           ID-6: /dev/sde vendor: Kingston model: SV300S37A120G size: 111.79 GiB 
           ID-7: /dev/sdf type: USB vendor: SanDisk model: SSD PLUS 240GB size: 223.58 GiB 
Partition: ID-1: / size: 109.29 GiB used: 89.61 GiB (82.0%) fs: ext4 dev: /dev/sdf2 
Sensors:   System Temperatures: cpu: 30.0 C mobo: N/A gpu: nvidia temp: 54 C 
           Fan Speeds (RPM): cpu: 0 gpu: nvidia fan: 0% 
Info:      Processes: 317 Uptime: 52m Memory: 62.75 GiB used: 3.42 GiB (5.4%) Init: systemd runlevel: 5 Compilers: 
           gcc: 9.2.1 Shell: bash v: 5.0.3 inxi: 3.0.36