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RichApi.Error thrown when calling paragraph.joinList

Area: WordIssue related to Word add-insIssue related to Word add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Status: Open.

#6429 In OfficeDev/office-js;

· drew-flowers opened on Jan 9, 2026

Ability to Restrict Office Add-ins to Desktop Platforms Only (Exclude Mac & Web)

Needs: triage 🔍New issue, needs PM on rotation to triage ASAPNew issue, needs PM on rotation to triage ASAP

Possible-Solution

Similar-Issue

Status: Open.

#6428 In OfficeDev/office-js;

· rahul-chanana opened on Jan 9, 2026

Local Storage Not Syncing Between Word and Excel Add-ins

Needs: triage 🔍New issue, needs PM on rotation to triage ASAPNew issue, needs PM on rotation to triage ASAP

Status: Open.

#6427 In OfficeDev/office-js;

· kinjal160202 opened on Jan 9, 2026

Outlook blocking addin request to localhost webserver

Needs: triage 🔍New issue, needs PM on rotation to triage ASAPNew issue, needs PM on rotation to triage ASAP

Possible-Solution

Similar-Issue

Status: Open.

#6426 In OfficeDev/office-js;

· mkondadg opened on Jan 9, 2026

Web Word Undo not working any more when OOXML is inserted via Addin

Area: WordIssue related to Word add-insIssue related to Word add-ins

Status: in backlogIssue is being tracked in the backlog but timeline for resolution is unknownIssue is being tracked in the backlog but timeline for resolution is unknown

Status: Open.

#6423 In OfficeDev/office-js;

· guenhter opened on Jan 8, 2026

Bug: paragraph.firstLineIndent property is ineffective on paragraphs indented with Space characters (works with Tab)

Area: WordIssue related to Word add-insIssue related to Word add-ins

Status: in backlogIssue is being tracked in the backlog but timeline for resolution is unknownIssue is being tracked in the backlog but timeline for resolution is unknown

Type: product bugBug in the Office Add-ins platform or Office JavaScript APIsBug in the Office Add-ins platform or Office JavaScript APIs

Status: Open.

#6424 In OfficeDev/office-js;

· huqigu opened on Jan 8, 2026

Feedback

Area: OutlookIssue related to Outlook add-insIssue related to Outlook add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Needs: author feedbackWaiting for author (creator) of Issue to provide more infoWaiting for author (creator) of Issue to provide more info

Status: Open.

#6425 In OfficeDev/office-js;

· Pbabu-Github opened on Jan 7, 2026

Incorrect Portuguese (PT-PT Portugal) translation for Spam addin.

Needs: triage 🔍New issue, needs PM on rotation to triage ASAPNew issue, needs PM on rotation to triage ASAP

Possible-Solution

Similar-Issue

Status: Open.

#6420 In OfficeDev/office-js;

· glr0221 opened on Jan 7, 2026

RichApi.Error occurs intermittently when accessing PowerPoint object properties (isNullObject / items) even after load() and context.sync()

Needs: triage 🔍New issue, needs PM on rotation to triage ASAPNew issue, needs PM on rotation to triage ASAP

Possible-Solution

regressionFunctionality that previously worked no longer worksFunctionality that previously worked no longer works

Similar-Issue

Status: Open.

#6419 In OfficeDev/office-js;

· ankitmahapatra opened on Jan 7, 2026

[Excel] Default ribbon icons instead of the ones specified in the manifest

Area: ExcelIssue related to Excel add-insIssue related to Excel add-ins

Needs: attention 👋Waiting on Microsoft to provide feedbackWaiting on Microsoft to provide feedback

Possible-Solution

Similar-Issue

Type: product bugBug in the Office Add-ins platform or Office JavaScript APIsBug in the Office Add-ins platform or Office JavaScript APIs

Status: Open.

#6417 In OfficeDev/office-js;

· dajduprat opened on Jan 6, 2026

CustomXml Parts are not included in Undo/Redo

Area: ExcelIssue related to Excel add-insIssue related to Excel add-ins

Status: in backlogIssue is being tracked in the backlog but timeline for resolution is unknownIssue is being tracked in the backlog but timeline for resolution is unknown

Status: Open.

#6415 In OfficeDev/office-js;

· James-Gauld-92 opened on Jan 5, 2026

Performance Issue: Windows vs Mac Performance Discrepancy

Area: ExcelIssue related to Excel add-insIssue related to Excel add-ins

Possible-Solution

Similar-Issue

Status: in backlogIssue is being tracked in the backlog but timeline for resolution is unknownIssue is being tracked in the backlog but timeline for resolution is unknown

Status: Open.

#6414 In OfficeDev/office-js;

· mhmostafa88 opened on Jan 5, 2026