Resume:
Potions effects created by beacons do not have a blue overlay, as opposite as in Minecraft: Java Edition and they are constantly flashing.

Parity issue.

Repro Steps:
1. Open latest Minecraft (MCBE) version and Minecraft: Java Edition (MCJE) version.
2. Build a basic 3x3 beacon and choose "Haste" in both editions.
3. Give yourself any other effect, for example strenght
In MCJE use:

/effect give @s minecraft:strength 9999 1 false

In MCBE use:

/effect @s strength 9999 1 false

Observed Results:
In MCJE the beacon effect has a blue overlay around it in the hud and does not flash because of running out while in MCBE it does not have the blue overlay and constantly flashes.

Expected Results:
In both versions the effect should have a blue overlay around it and never flash for running out of time if the effect is given by a beacon.

Images:
MCJE

MCBE