Steps to reproduce:
1. Open user's attached project "URP-postproc-bug.zip"
2. Build the Project using "SampleScene" with Autoconnect Profiler
3. Profile the device with the running build
4. Notice the Performance related to UI rendering (UIEvents.WillRenderCanvases, UGUI.Renderung.UpdateBatches, Canvas.BuildBatch, Gfx.WaitForRenderThread)

Expected results: Canvas batches are not recreated every frame when Canvas Transform position changes
Actual results: Canvas Batches are recreated every frame when Canvas Transform position changes

Reproducible with: 2019.3.0b10(7.1.2), 2020.1.0a12(7.1.2)

VLNQA00277, Asus ROG Phone (ASUS_Z01QD), Android 8.1.0, CPU: Snapdragon 845 SDM845, GPU: Adreno (TM) 630

Not Reproducible:
VLNQA00128, Samsung Galaxy Note8 (SM-N950F), Android 9, CPU: Exynos 9 Octa 8895, GPU: Mali-G71

VLNQA00269, Samsung Galaxy S10e (SM-G970F), Android 9, CPU: Exynos 9 9820, GPU: Mali-G76

VLNQA00290, Samsung Galaxy S10 5G (SM-G977U), Android 9, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640

Notes: The reproduction does not occur every time, in some cases, some time should pass after profiling has been started. Project is braking in 2019.2 and lower