Tropico 4 Achievements getting registered late (57690)

I played Tropico 4 via Steam Play yesterday. The game runs very well with maximum settings and everything. However, I had a full cabinet of ministers, but the achievement did not activate. None of the achievements seem to activate. However, today when I opened the game, the achievements have been activated. Is there a delay with achievements when using Proton?

My system is a self-built desktop machine running Linux Mint 18.3 64-bit, Steam hardware report below:

Computer Information:
    Manufacturer:  Unknown
    Model:  Unknown
    Form Factor: Desktop
    No Touch Input Detected

Processor Information:
    CPU Vendor:  GenuineIntel
    CPU Brand:  Intel(R) Core(TM) i5-4590S CPU @ 3.00GHz
    CPU Family:  0x6
    CPU Model:  0x3c
    CPU Stepping:  0x3
    CPU Type:  0x0
    Speed:  3700 Mhz
    4 logical processors
    4 physical processors
    HyperThreading:  Unsupported
    FCMOV:  Supported
    SSE2:  Supported
    SSE3:  Supported
    SSSE3:  Supported
    SSE4a:  Unsupported
    SSE41:  Supported
    SSE42:  Supported
    AES:  Supported
    AVX:  Supported
    CMPXCHG16B:  Supported
    LAHF/SAHF:  Supported
    PrefetchW:  Unsupported

Operating System Version:
    Linux Mint 18.3 Sylvia (64 bit)
    Kernel Name:  Linux
    Kernel Version:  4.13.0-45-generic
    X Server Vendor:  The X.Org Foundation
    X Server Release:  11804000
    X Window Manager:  Metacity (Marco)
    Steam Runtime Version:  steam-runtime-beta-release_2018-06-14

Video Card:
    Driver:  NVIDIA Corporation GeForce GT 630/PCIe/SSE2
    Driver Version:  4.6.0 NVIDIA 390.67
    OpenGL Version: 4.6
    Desktop Color Depth: 24 bits per pixel
    Monitor Refresh Rate: 59 Hz
    VendorID:  0x10de
    DeviceID:  0xf00
    Revision Not Detected
    Number of Monitors:  1
    Number of Logical Video Cards:  1
    Primary Display Resolution:  1920 x 1200
    Desktop Resolution: 1920 x 1200
    Primary Display Size: 20.00" x 12.52" (23.58" diag)
                                            50.8cm x 31.8cm (59.9cm diag)
    Primary Bus: PCI Express 16x
    Primary VRAM: 2048 MB
    Supported MSAA Modes:  2x 4x 8x 16x 

Sound card:
    Audio device: Realtek ALC887-VD

Memory:
    RAM:  7916 Mb

Miscellaneous:
    UI Language:  English
    LANG:  en_US.UTF-8
    Total Hard Disk Space Available:  418139 Mb
    Largest Free Hard Disk Block:  38891 Mb
    VR Headset: None detected

The report concerns Tropico 4 running through Steam Play on Linux Mint, and names no files, tests, or entry points. Start by reproducing the achievement behavior and checking whether achievements appear immediately or only after reopening the game; done means establishing whether the delay is expected or identifying a reproducible Proton issue.