Strange! but up to my knowledge , anyone can leave the country if he fulfill the residency requirements and have a valid PR status.
Not at all strange. On the contrary, as just the query itself, and numerous anecdotal reports in this forum illustrate, the information requested from
@prasanna@ is commonly requested from applicants IRCC knows or perceives to be abroad; in particular, when the test was taken while outside Canada, apparently this is typical for applicants being processed in at least some specific local offices.
There is nothing about any such request itself that suggests cause for worry, other than the obvious incidental delay in the time line, which may be quite minimal, comparable to other minor non-routine processing (like a finger print request), so long as there are not other circumstances triggering more complex non-routine processing.
For additional similar reports, and some in-depth discussion, see several other topics related to this in particular, among others which more broadly address how living abroad (not merely traveling, albeit there is a tendency among some forum participants to mischaracterize living abroad as merely travel) can affect the process. Among such topics, there is the one which
@iceman55 links above, where for example I noted:
The scope of information IRCC can request is very broad, and generally no particular reason for it is needed, their discretion only limited by the scope of action they can take if the applicant declines or fails to provide the requested information. Other than (honestly) responding with the information, or a request that IRCC proceed without the information (and waiting to see how that goes), an applicant's recourse is mandamus.
In regards to . . .
". . . to my knowledge , anyone can leave the country if he fulfill the residency requirements and have a valid PR status."
Not sure why you think that is relevant here.
There has been a contingency of forum participants who erroneously claim IRCC cannot legitimately request information related to an applicant's post-application activities (that is, while the application is pending), like work or address information after applying. IRCC can and it does. Especially (but not limited to) applicants known or perceived to have relocated abroad (again, not merely travel abroad). Requests for such information in no way constitutes any restriction on a PR's mobility rights, noting that of course a PR does not have the same protection of mobility rights as a citizen.