Hello
As i am facing this issue with some image elements and some image elements works fine…
Do you have any browsers extensions enabled? Eg adblockers etc?
Any errors/warnings in Dev Console?
Can you post a link to the project please and which entity is this on?
I doubt it is extension problem or what… Because some of them are working fine.
Here is console log…
In detail:
instrument.ts:129 Cannot find reference asset:texture:compress:compressionMode
(anonymous) @ instrument.ts:129
(anonymous) @ editor.js:60129
Editor.call @ editor.js:17074
addAttribute @ editor.js:67675
(anonymous) @ editor.js:67573
AttributesInspector @ editor.js:67572
DOM @ editor.js:82015
TextureAssetInspector @ editor.js:82305
(anonymous) @ editor.js:75569
AssetInspector @ editor.js:75565
(anonymous) @ editor.js:88370
(anonymous) @ events.js:37
Events.emit @ events.js:57
(anonymous) @ editor.js:17113
sentryWrapped @ helpers.ts:87
instrument.ts:129 Powered by PlayCanvas 1.39.4 5653326
instrument.ts:129 messenger connected
38instrument.ts:129 Elements will not get any input events because this.system.app.elementInput is not created
(anonymous) @ instrument.ts:129
set @ playcanvas-stable.js:52673
initializeComponentData @ playcanvas-stable.js:52956
addComponent @ playcanvas-stable.js:40719
processEntity @ editor.js:110384
createEntities @ editor.js:110442
(anonymous) @ editor.js:110458
(anonymous) @ events.js:37
Events.emit @ events.js:57
(anonymous) @ editor.js:41221
(anonymous) @ editor.js:41183
emitNone @ editor.js:19109
emit @ editor.js:19194
Doc.ingestSnapshot @ editor.js:22215
Doc._handleSubscribe @ editor.js:22279
Connection._handleBulkMessage @ editor.js:21686
Connection.handleMessage @ editor.js:21656
socket.onmessage @ editor.js:21556
connection.socket.onmessage @ editor.js:23278
instrument.ts:129 responseType: text being served with Content-Type: application/javascript
(anonymous) @ instrument.ts:129
_onSuccess @ playcanvas-stable.js:2051
_onReadyStateChange @ playcanvas-stable.js:2017
(anonymous) @ playcanvas-stable.js:1953
sentryWrapped @ helpers.ts:87
XMLHttpRequest.send (async)
(anonymous) @ trycatch.ts:281
(anonymous) @ instrument.ts:309
request @ playcanvas-stable.js:1963
get @ playcanvas-stable.js:1817
basisDownload @ playcanvas-stable.js:36233
basisDownloadFromConfig @ playcanvas-stable.js:36273
basisTranscode @ playcanvas-stable.js:36288
(anonymous) @ playcanvas-stable.js:36319
_onSuccess @ playcanvas-stable.js:2067
_onReadyStateChange @ playcanvas-stable.js:2017
(anonymous) @ playcanvas-stable.js:1953
sentryWrapped @ helpers.ts:87
XMLHttpRequest.send (async)
(anonymous) @ trycatch.ts:281
(anonymous) @ instrument.ts:309
request @ playcanvas-stable.js:1963
get @ playcanvas-stable.js:1817
load @ playcanvas-stable.js:36309
load @ playcanvas-stable.js:36843
handleLoad @ playcanvas-stable.js:34697
load @ playcanvas-stable.js:34731
load @ playcanvas-stable.js:37236
_bindAndAssignAssets @ playcanvas-stable.js:33609
patch @ playcanvas-stable.js:33488
patch @ playcanvas-stable.js:34797
_opened @ playcanvas-stable.js:37200
load @ playcanvas-stable.js:37242
_bindMaterialAsset @ playcanvas-stable.js:55161
onEnable @ playcanvas-stable.js:55087
_onHierarchyStateChanged @ playcanvas-stable.js:31556
_notifyHierarchyStateChanged @ playcanvas-stable.js:31523
_onInsertChild @ playcanvas-stable.js:17343
addChild @ playcanvas-stable.js:17312
insertChild @ editor.js:110360
processEntity @ editor.js:110411
createEntities @ editor.js:110442
(anonymous) @ editor.js:110458
(anonymous) @ events.js:37
Events.emit @ events.js:57
(anonymous) @ editor.js:41221
(anonymous) @ editor.js:41183
emitNone @ editor.js:19109
emit @ editor.js:19194
Doc.ingestSnapshot @ editor.js:22215
Doc._handleSubscribe @ editor.js:22279
Connection._handleBulkMessage @ editor.js:21686
Connection.handleMessage @ editor.js:21656
socket.onmessage @ editor.js:21556
connection.socket.onmessage @ editor.js:23278
Show 23 more frames
If i delete the element and add it then it works fine…
Should i do this?
EDIT:
I also come to know that… If i duplicate this then another element will will have same issue.
I already added you in the project.
Honestly not sure what is happening there 
Removing the image component and re-adding seems to ‘fix’ it. If you find a pattern or reproducible case for this, please let us know.
Side note: Please use checkpoints to keep a history of your work or offline backups. Accidentally deleting assets etc is not possible to recover.
Edit: Sorry, I may have screwed up the layout/data of the reverse and forward buttons 
I dont have any idea how this happen… When i come back to change ui at that time i realise that there is no image slot.
Ohh ok No worries… That was Duplicate project for forum purpose…
Here i copy pasted those components. And they are here without Image Slot
https://playcanvas.com/editor/scene/1114432
Maybe you can fork and test it out…
Just to check, does the workaround work for you?
Thanks @yaustar for taking look into main project…
Yes works this way
Yes this solution works!
But i am unable to reproduce that bug…
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