Moira's fade causes all equipments to be unequipped, i doubt this is intended feature, making it must to equip all equipment again. And Sombra's invisbility does not turn you invisible nor make enemies ignore you (again not sure if this is intended). I believe there was another hero with similiar issue that causes all armor to be unequipped but i cannot remember which it was again, if i remember i will make report of it in here.
Edit: Typo

I can't use ultimate of heroes other than Pharah.Plz help me

I am facing problem with ultimate of heroes other than Pharah

Moira's fade does not cause any equipment to be unequipped when I, or anyone I've spoken to, use it.
Sombra's Invisibility turns the player invisible to enemies (still partially opaque to friendly entities / self). Hero mobs will ignore invisible Sombra unless they get too close. Normal Minecraft mobs are not affected, as Minecraft invisibility does not work if armor is worn.

Could you tell me what Minewatch and Forge versions you're using? And if you have any other mods installed?

If you can figure out which mod is causing Moira's Fade to unequip armor, then I can take a look at it.

I don't have time to disable mods one by one today but i might try some other day

Using forge-14-23-2-2611

And then mods are:
Angel of Vengeance
Architect
Aroma1997Core
AutoRegLib
B.A.S.E
Backpacks!
Baubles
BiblioCraft
Bibliotheca
Botania
Chisel
Class Armor: Berserker, Mage and Archer
Class Armor: Necromancer and Paladin
Clumps
CodeChicken Lib 1.8.+
Combustive Fishing
ConnectedTexturesMod
Cosmetic Armor Reworked
CraftStudio API
CreativeCore
Cucumber
CXLibrary
Cyclops Core
Dimdoors-3.0.6-b.180
Dungeon Tactics
ElecCore
EvilCraft
Fence Jumper
Hammer Core
Hammer Time!
Hexxit Gear
Hwyla
Ice and Fire: Dragons in whole new light!
Improvable Skills 3
Inventory Pets
Iron Chests
IvToolkit
JourneyMap
Just Enough Items (JEI)
Just Enough Resources (JER)
LibrarianLib
LLibrary
LootBags
Lord Craft
Lycanites Mobs
Magical Map
Magical Psi
Mantle
McJtyLib
Minewatch
More Furnaces
More Shearables
Morpheus
NetherEx
Not Enough Wands
Open Glider
OpenBlocks
OpenModsLib
Overlord
Pam's Harvestcraft
Placeable Items
Placebo
PlayerRevive
Psi
Random Things
Recurrent Complex
Redstone Flux
Roguelike Dungeons
Ruins (Structure Spawning System)
Runes of Wizardry
Runes of Wizardry - Classic Dusts Pack
SecretRoomsMod
Shadowfacts' Forgelin
Simply Tea!
SubLib
TamModized
The Twilight Forest
Thut Essentials
ToroHealth Damage Indicators
Totem Defender
Totemic
Vampirism - Become a vampire!
Wawla - What Are We Looking At
Waystones
Wizardry Mod

Oh and version 3.10.3 Minewatch

Hi! I got up very early, was too bothered by the bugs and spent awhile figuring this one out, and found out that this mod causes equipment to be unequipped when using Moira's fade: DungeonTactics-1.12.2-0.14.2

Edit to avoid spam: Also question, i realized earlier when i was playing with my friend in my Private server, i wasnt able to heal with Mercy, as if my friend was an enemy.. My PvP is disabled too so idk what does that, does this mod have some command to choose who is in team and who is not?

@Alex2216 It's syncing from server to client because projectiles spawn centered on the player on the server in order to not be clipped by nearby blocks, as of the last update. And in the future, please make a separate issue.

I found a problem with Junkrat's frag launcher; suddendly its projectile trajectory move to left without reaseon as shown in the image.
https://imgur.com/8PRvI9B